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NIR Free-Space Isolators (760 - 1050 nm)


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Tunable Isolation Curves
Click to Enlarge

Our Adjustable Narrowband Isolators can be tuned to maximize the peak isolation for any wavelength within a narrow spectral range (shaded in this graph). See the Wavelength Tuning tab for more details.
Optical Isolator in FiberBench Mount
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Isolator in Custom Package for FiberBench Systems

Features

  • Minimize Feedback into Optical Systems
  • Free-Space Input and Output Ports
  • Fixed or Tunable Wavelength Ranges
  • Isolation at Center Wavelength from 34 to 60 dB
  • Max Beam Diameter up to Ø4.7 mm
  • Polarization-Dependent Input
  • Custom Isolators Available (See the Custom Isolators tab)

Thorlabs is pleased to stock a variety of free-space optical isolators designed for use in the near infrared spectral range (760 - 1050 nm). Optical isolators, also known as Faraday isolators, are magneto-optic devices that preferentially transmit light along a single direction, shielding upstream optics from back reflections. Back reflections can create a number of instabilities in light sources, including intensity noise, frequency shifts, mode hopping, and loss of mode lock. In addition, intense back-reflected light can permanently damage optics. Please see the Isolator Tutorial tab for an explanation of the operating principles of a Faraday isolator.

In the near infrared wavelength range, we offer three types of isolators. The first type, Fixed Narrowband Isolators, contains fixed, factory-aligned optics, for which peak isolation and peak transmission occurs at a pre-defined center wavelength. Any deviation from this wavelength will cause a dip in isolation and transmission. The second type, Adjustable Narrowband Isolators, offers the user the ability to adjust the alignment of the input and output polarizers, allowing tuning of the center wavelength within a 30 - 40 nm range; see the tables below for details. The third type, Tandem Adjustable Narrowband Isolators, consists of two Faraday rotators in series, boosting the isolation to at least 55 dB at the expense of lower transmission. Please see the Isolator Types tab for additional design details and representative graphs of the wavelength-dependent isolation.

Selection Guide for Isolators
Free-Space Isolators
Spectral RegionWavelength Range
UV365 - 385 nm
Visible395 - 690 nm
NIR760 - 1050 nm
Nd:YAG1064 nm
IR1120 - 2100 nm
MIR4.45 - 4.55 µm
Broadband Free-Space Isolators
Fiber Isolators
Custom Isolators

The housing of each isolator shown here, except for the IO-D-780-VLP, is marked with an arrow that indicates the direction of forward propagation. The input and output apertures of the IO-D-780-VLP are indicated by the black and gold coloring of the cylinder, respectively. All isolators shown here (including the IO-D-780-VLP) have engravings that indicate the alignment of the input and output polarizers.

Thorlabs also manufactures isolators for fiber optic systems and wavelengths from the visible to the infrared (see the Selection Guide table to the left). As indicated in the tables below and pictured to the right, many of our stock isolators can also be provided in a mount designed for our FiberBench systems. If Thorlabs does not stock an isolator suited for your application, please refer to the Custom Isolators tab for information on our build-to-order options, or contact Tech Support. Thorlabs' in-house manufacturing service has over 25 years of experience and can deliver a free-space isolator tuned to your center wavelength (from 244 nm to 4.55 µm).

Shaded regions on a graph represent the center wavelength tuning range of the isolator. With these isolators, the isolation and transmission curves will shift as the center wavelength shifts. If the graph is not shaded, then the isolator is non-tunable. Please note that these curves were made from theoretical data and that isolation and transmission will vary from unit to unit.

Tuning an Adjustable Narrowband Isolator

  • Optimize Our Isolators to Provide the Same Peak Isolation Anywhere Within Their Tuning Range
  • Simple Tuning Procedure, Illustrated Below, Consists Primarily of Rotating the Output Polarizer
  • Slight Transmission Losses Occur Due to Polarizer Rotation
Dependence of Transmission on Center Wavelength
Click to Enlarge
When the isolator is tuned away from its design wavelength, the maximum transmission falls because the output polarizer's transmission axis is not parallel to the polarization direction of the output light.
Tunable Isolation Curves
Click to Enlarge

Our Adjustable Narrowband Isolators can be tuned to maximize the peak isolation for any wavelength within a narrow spectral range (shaded in this graph).



Click to Enlarge

Light Not at the Design Wavelength is Partially Transmitted

Click to Enlarge

Light at the Design Wavelength is Rejected

Operating Principles of Optical Isolators
Thorlabs' Adjustable Narrowband Isolators are designed to provide the same peak isolation anywhere within a 30 - 40 nm tuning range. They contain a Faraday rotator that has been factory tuned to rotate light of the design wavelength by 45°. Light propagating through the isolator in the backward direction is polarized at 45° by the output polarizer and is rotated by 45° by the Faraday rotator, giving a net polarization of 90° relative to the transmission axis of the input polarizer. Therefore, an isolator rejects backward propagating light. See the Isolator Tutorial tab for a schematic of the beam path.

The magnitude of the rotation caused by the Faraday rotator is wavelength dependent. This means that light with a different wavelength than the design wavelength will not be rotated at exactly 45°. For example, if 980 nm light is rotated by 45° (that is, 980 nm is the design wavelength), then 975 nm light is rotated by 45.6°. If 975 nm light is sent backward through an isolator designed for 980 nm without any tweaking, it will have a net polarization of 45° + 45.6° = 90.6° relative to the axis of the input polarizer. The polarization component of the light parallel to the input polarizer's axis will be transmitted, and the isolation will therefore be significantly reduced.

Since the net polarization needs to be 90° to obtain high isolation, the output polarizer is rotated to compensate for the extra rotation being caused by the Faraday isolator. In our example, the new polarizer angle is 90° - 45.6° = 44.4°. This adjustment increases the isolation back to the same value as at the design wavelength.

Consequences of Wavelength Tuning Procedure
As a direct consequence of rotating the output polarizer, the maximum transmission in the forward direction decreases. 975 nm light propagating in the forward direction is polarized at 0° by the input polarizer and rotated by 45.6° by the Faraday rotator, but the output polarizer is now at 44.4°. The amount of the transmission decrease can be quantified using Malus' Law:

Malus's Law
Malus' Law

Here, θ is the angle between the polarization direction of the light after the Faraday rotator and the transmission axis of the polarizer, I0 is the incident intensity, and I is the transmitted intensity. For small deviations from the center wavelength, the decrease in transmission is very slight, but for larger deviations, the decrease becomes noticeable. In our example (a 5 nm difference between the design wavelength and the usage wavelength), θ = 45.6° - 44.4° = 1.2°, so I = 0.9996 I0. This case is shown in the graphs above.

In applications, the decrease in transmission caused by the tuning procedure is usually less important than the significantly enhanced isolation gained by tuning. In fact, if the 980 nm isolator shown in the graphs above were used at 965 nm without tuning, the transmission difference would be negligible, but the isolation would be only 29 dB (instead of 36 dB). This case is also shown in the graphs above.

Thorlabs' isolator housings make it easy to rotate the output polarizer without disturbing the rest of the isolator. Our custom isolator manufacturing service (see the Custom Isolators tab) can also provide an isolator specifically designed for a particular center wavelength, which can eliminate or strongly mitigate the transmission losses that occur at the edges of the tuning range. These custom isolators are provided at the same cost as their equivalent stock counterparts. For more information, please contact Technical Support.


Illustrated Tuning Procedure

To optimize the isolation curve for a specific wavelength within the tuning range, the alignment of the output polarizer may be tweaked following the simple procedure outlined below. Only a minor adjustment is necessary to cover a range of several nanometers. The procedure differs slightly for different isolator packages, but the principle remains the same across our entire isolator family, and complete model-specific tuning instructions ship with each isolator.


Step 1:
Orient the isolator in the backward direction with respect to the beam (i.e., with the arrow pointing antiparallel to the beam propagation direction). A power meter with high sensitivity at low power levels should be placed after the isolator.

Use the included 5/64" hex key to loosen the isolator from its saddle.


Step 2:
Grip the isolator by the sides and gently bring it out of its saddle. It is only necessary to bring it out far enough to expose the 8-32 setscrew at the top, as shown in the photo to the left.


Step 3:
Use the included 5/64" hex key to tighten the isolator back into its saddle with the 8-32 setscrew exposed.

The isolator is mechanically stable in this position as long as the isolator has not been brought forward too much. (The amount shown in the image to the left is safe by several millimeters.) It should therefore not be necessary to reinsert the isolator at the end of the tuning procedure.


Step 4:
Loosen the exposed 8-32 setscrew using the included 5/64" hex key. At this point, the output polarizer will be free to rotate.


Step 5:
Rotate the output polarizer to minimize the power on the power meter. As explained above, the necessary adjustment should be only a few degrees, depending upon the desired center wavelength. Tighten the 8-32 setscrew once optimization is achieved.

As long as the isolator was not brought forward too much at the end of Step 2, the isolator will be mechanically stable in this position. Attempting to reinsert the isolator at this point may cause misalignment.

Fixed Narrowband Isolation

Fixed Narrowband Isolator

The isolator is set for 45° of rotation at the design wavelength. The polarizers are non-adjustable and are set to provide maximum isolation at the design wavelength. As the wavelength changes the isolation will drop; the graph shows a representative profile.

  • Fixed Rotator Element, Fixed Polarizers
  • Polarization Dependent
  • Smallest and Least Expensive Isolator Type
  • No Tuning

Adjustable Narrowband Isolation

Adjustable Narrowband Isolator

The isolator is set for 45° of rotation at the design wavelength. If the usage wavelength changes, the Faraday rotation will change, thereby decreasing the isolation. To regain maximum isolation, the output polarizer can be rotated to "re-center" the isolation curve. This rotation causes transmission losses in the forward direction that increase as the difference between the usage wavelength and the design wavelength grows.

  • Fixed Rotator Element, Adjustable Polarizers
  • Polarization Dependent
  • General-Purpose Isolator

Adjustable Broadband Isolation

Adjustable Broadband Isolator

The isolator is set for 45° of rotation at the design wavelength. There is a tuning ring on the isolator that adjusts the amount of Faraday rotator material that is inserted into the internal magnet. As your usage wavelength changes, the Faraday rotation will change, thereby decreasing the isolation. To regain maximum isolation, the tuning ring is adjusted to produce the 45° of rotation necessary for maximum isolation.

  • Adjustable Rotator Element, Fixed Polarizers
  • Polarization Dependent
  • Simple Tuning Procedure
  • Broader Tuning Range than Adjustable Narrowband Isolators

Fixed Broadband

Fixed Broadband Isolator

A 45° Faraday rotator is coupled with a 45° crystal quartz rotator to produce a combined 90° rotation on the output.  The wavelength dependences of the two rotator materials work together to produce a flat-top isolation profile. The isolator does not require any tuning or adjustment for operation within the designated design bandwidth.

  • Fixed Rotator Element, Fixed Polarizers
  • Polarization Dependent
  • Largest Isolation Bandwidth
  • No Tuning Required

Tandem Isolators

Tandem Isolators

Tandem isolators consist of two Faraday rotators in series, which share one central polarizer. Since the two rotators cancel each other, the net rotation at the output is 0°. Our tandem designs yield narrowband isolators that may be fixed or adjustable.

  • Up to 60 dB Isolation
  • Polarization Dependent
  • Highest Isolation
  • Fixed or Adjustable

Polarizer Types, Sizes, and Power Limits

Thorlabs designs and manufactures several types of polarizers that are used across our family of optical isolators. Their design characteristics are detailed below. The suffix of the part number of a given isolator identifies the type of polarizer that isolator contains.

Polarizer Comparison
TypeSchematic
(Click to Enlarge)
Maximum Power DensityDescription
Very Low Power
(VLP)
VLP Polarizer25 W/cm2 (CW, Blocking)
100 W/cm2 (CW, Transmission)
Our Very Low Power Absorptive Film Polarizers are the most compact option. For light polarized perpendicular to the polarizer's transmission axis, the max power density is 25 W/cm2, while for light polarized parallel to the polarizer's transmission axis, the max power density is 100 W/cm2.
Wire Grid
(WG)
VLP Polarizer25 W/cm2 (CW)Wire Grid Polarizers are used in our mid-IR isolators. They consist of a linearly spaced wire grid pattern that is deposited onto an AR-coated silicon substrate.
Polarizing Beamsplitter
(PBS)
PBS Polarizer50 W/cm2 (CW)Polarizing Beamsplitter Cubes are commonly used in low-power applications and feature an escape window useful for monitoring or injection locking.
α-BBO
Glan-Laser
(GLB)
GLB Polarizer100 W/cm2 (CW)Thorlabs' α-BBO Glan-Laser polarizers are all based on high-grade, birefringent, α-BBO crystals with a wavelength range of 210 - 450 nm. Due to the birefringent structure of α-BBO, a phase delay is created between two orthogonally polarized waves traveling in the crystal. These are similar to the High Power (HP) polarizers, but have a different escape angle.
Low Power
(LP)
LP Polarizer250 W/cm2 (CW)
25 MW/cm2 (Pulsed)
Our Low Power Polarizers are Glan-type, crystal polarizers, providing high transmission and power densities at the expense of a larger package than Very Low Power (VLP) and Polarizing Beamsplitter (PBS) polarizers.
Medium Power
(MP)
MP Polarizer100 W/cm2 (CW)
50 MW/cm2 (Pulsed)
Medium Power Polarizers are Glan-type, crystal polarizers, capable of handling higher powers. The rejected beam is internally scattered, which reduces the maximum power density, but also eliminates a stray beam from the setup.
High Power
(HP)
HP Polarizer500 W/cm2 (CW)
150 MW/cm2 (Pulsed)
High Power Polarizers are Glan-type, crystal polarizers, similar in size and transmission to Medium Power (MP) polarizers, but capable of handling higher powers. They feature an escape window suited for injection locking.
Very High Power
(VHP)
VHP Polarizer20 kW/cm2 (CW)
2 GW/cm2 (Pulsed)
Our Very High Power Polarizers are based on Brewster windows and feature the highest power handling possible. These polarizers have larger packages than HP-based designs, but are also more economical. All VHP-based designs also feature escape windows.

Optical Isolator Tutorial

Function
An optical isolator is a passive magneto-optic device that only allows light to travel in one direction. Isolators are used to protect a source from back reflections or signals that may occur after the isolator. Back reflections can damage a laser source or cause it to mode hop, amplitude modulate, or frequency shift. In high-power applications, back reflections can cause instabilities and power spikes.

An isolator’s function is based on the Faraday Effect. In 1842, Michael Faraday discovered that the plane of polarized light rotates while transmitting through glass (or other materials) that is exposed to a magnetic field. The direction of rotation is dependent on the direction of the magnetic field and not on the direction of light propagation; thus, the rotation is non-reciprocal. The amount of rotation Q equals V x L x H, where V, L, and H are as defined below.

Faraday Effect in an Isolator Drawing
Figure 1

Faraday Rotation

Q = V x L x H

V: the Verdet Constant, a property of the optical material, in minutes/Oersted-cm.

L: the path length through the optical material in cm.

H: the magnetic field strength in Oersted.

An optical isolator consists of an input polarizer, a Faraday rotator with magnet, and an output polarizer. The input polarizer works as a filter to allow only linearly polarized light into the Faraday rotator. The Faraday element rotates the input light's polarization by 45°, after which it exits through another linear polarizer. The output light is now rotated by 45° with respect to the input signal. In the reverse direction, the Faraday rotator continues to rotate the light's polarization in the same direction that it did in the forward direction so that the polarization of the light is now rotated 90° with respect to the input signal. This light's polarization is now perpendicular to the transmission axis of the input polarizer, and as a result, the energy is either reflected or absorbed depending on the type of polarizer.

Drawing of Light Propagation Through an Isolator
Figure 2. A polarization-dependent isolator. Light propagating in the reverse direction is rejected by the input polarizer.

Polarization-Dependent Isolators

The Forward Mode
In this example, we will assume that the input polarizer's axis is vertical (0° in Figure 2). Laser light, either polarized or unpolarized, enters the input polarizer and becomes vertically polarized. The Faraday rotator will rotate the plane of polarization (POP) by 45° in the positive direction. Finally, the light exits through the output polarizer which has its axis at 45°. Therefore, the light leaves the isolator with a POP of 45°.

The Reverse Mode
Light traveling backwards through the isolator will first enter the output polarizer, which polarizes the light at 45° with respect to the input polarizer. It then passes through the Faraday rotator rod, and the POP is rotated another 45° in the positive direction. This results in a net rotation of 90° with respect to the input polarizer, and thus, the POP is now perpendicular to the transmission axis of the input polarizer. Hence, the light will either be reflected or absorbed.

Polarization-Independent Fiber Isolators

The Forward Mode
In a polarization independent fiber isolator, the incoming light is split into two branches by a birefringent crystal (see Figure 3). A Faraday rotator and a half-wave plate rotate the polarization of each branch before they encounter a second birefringent crystal aligned to recombine the two beams.

Light Propagation Through a Polarization-Independent IsolatorClick for Details
Figure 3. A polarization independent isolator. Light is deflected away from the input path and stopped by the housing.

The Reverse Mode
Back-reflected light will encounter the second birefringent crystal and be split into two beams with their polarizations aligned with the forward mode light. The half wave plate is a non-reciprocal rotator, so it will cancel out the rotation introduced by the faraday rotator for the reverse mode light. When the light encounters the input birefringent beam displacer, it will be deflected away from the collimating lens and into the walls of the isolator housing, preventing the reverse mode from entering the input fiber.

General Information

Damage Threshold
With 25 years of experience and 5 U.S. patents, our isolators typically have higher transmission and isolation than other isolators, and are smaller than other units of equivalent aperture. For visible to YAG laser Isolators, Thorlabs' Faraday Rotator crystal of choice is TGG (terbium-gallium-garnet), which is unsurpassed in terms of optical quality, Verdet constant, and resistance to high laser power. Thorlabs' TGG Isolator rods have been damage tested to 22.5 J/cm2 at 1064 nm in 15 ns pulses (1.5 GW/cm2), and to 20 kW/cm2 CW. However, Thorlabs does not bear responsibility for laser power damage that is attributed to hot spots in the beam.

Magnet
The magnet is a major factor in determining the size and performance of an isolator. The ultimate size of the magnet is not simply determined by magnetic field strength but is also influenced by the mechanical design. Many Thorlabs magnets are not simple one piece magnets but are complex assemblies. Thorlabs' modeling systems allow optimization of the many parameters that affect size, optical path length, total rotation, and field uniformity. Thorlabs' US Patent 4,856,878 describes one such design that is used in several of the larger aperture isolators for YAG lasers. Thorlabs emphasizes that a powerful magnetic field exists around these Isolators, and thus, steel or magnetic objects should not be brought closer than 5 cm.

Temperature
The magnets and the Faraday rotator materials both exhibit a temperature dependence. Both the magnetic field strength and the Verdet Constant decrease with increased temperature. For operation greater than ±10 °C beyond room temperature, please contact Technical Support.

Dispersion Measurement of Isolator IS-5-780-HP
Figure 4

Pulse Dispersion

Pulse broadening occurs anytime a pulse propagates through a material with an index of refraction greater than 1. This dispersion increases inversely with the pulse width and therefore can become significant in ultrafast lasers.

τ: Pulse Width Before Isolator

τ(z): Pulse Width After Isolator

Example:
t = 197 fs results in t(z) = 306 fs (pictured to the right)
t = 120 fs results in t(z) = 186 fs

OEM Application Services
  • Direct Integration to Laser Head Assemblies
  • Combination Isolator and Fiber Coupling Units
  • Minimum Footprint Packages
  • Filter Integration
  • Feedback Monitoring
  • Private Labeling

OEM and Non-Standard Isolators

In an effort to provide the best possible service to our customers, Thorlabs has made a commitment to ship our most popular free-space and fiber isolator models from stock. We currently offer same-day shipping on more than 90 isolator models. In addition to these stock models, non-stock isolators with differing aperture sizes, wavelength ranges, package sizes, and polarizers are available. These generally have the same price as a similar stock unit. If you would like a quote on a non-stock isolator, please fill out the form below and a member of our staff will be in contact with you.

Thorlabs has many years of experience working with OEM, government, and research customers, allowing us to tailor your isolator to specific design requirements. In addition to customizing our isolators (see the OEM Application Services list to the right), we also offer various application services.

 

ParameterRange
Wavelength RangeFrom 244 - 4550 nma
Aperture Sizes Up to Ø15 mm
Polarization DependenceDependent or Independent
Max PowerbUp to 2 GW/cm²
IsolationUp to 60 dB (Tandem Units)
  • Custom Faraday rotators, for use in the 244 to 5000 nm range, are also available.
  • The maximum power specification represents the maximum power for the combined forward and reverse directions. Therefore, the sum of the powers in the forward and reverse directions cannot exceed the maximum power specification.

Free-Space Isolators

We are able to provide a wide range of flexibility in manufacturing non-stock, free-space isolators. Almost any selection of specifications from our standard product line can be combined to suit a particular need. The table to the right shows the range of specifications that we can meet.

We offer isolators suitable for both narrowband and broadband applications. The size of the housing is very dependent on the desired maximum power and aperture size, so please include a note in the quote form below if you have special requirements.

 

Faraday Rotators

We can also offer Faraday rotators which rotate the polarization of incoming light by 45° ±3°. These are similar to our isolators but with the polarizers at each end removed. They are available with center wavelengths from 244 to 5000 nm.

 

ParameterRange
Wavelength RangeFrom 633 - 2050 nma
Polarization DependenceDependent or Independent
Max Powerb (Fiber to Free-Space)30 W
Max Powerb (Fiber to Fiber)20 W
  • For wavelengths shorter than 633 nm, we recommend using our free-space isolators in conjunction with our modular FiberBench accessories. Please contact Technical Support for more information.
  • The maximum power specification represents the maximum power for the combined forward and reverse directions. Therefore, the sum of the powers in the forward and reverse directions cannot exceed the maximum power specification.

Fiber Isolators

Thorlabs is uniquely positioned to draw on experience in classical optics, fiber coupling, and isolators to provide flexible designs for a wide range of fiber optic specifications. Current design efforts are focused on increasing the Maximum power of our fiber isolators at and near the 1064 nm wavelength. We offer models with integrated ASE filters and taps. The table to the right highlights the range of specifications that we can meet.

Optical Isolator in FiberBench Mount
Click to Enlarge

Twin Steel Pins Insert into FiberBench
Optical Isolator in FiberBench Mount
Click to Enlarge

Mounted Isolator

The fiber used is often the limiting factor in determining the Maximum power the isolator can handle. We have experience working with single mode (SM) and polarization-maintaining fibers (PM); single-, double- and triple-clad fibers; and specialty fibers like 10-to-30 µm LMA fibers and PM LMA fibers.

In the spectral region below 633 nm, we recommend mounting one of our free-space isolators in a FiberBench system. A FiberBench system consists of pre-designed modules that make it easy to use free-space optical elements with a fiber optic system while maintaining excellent coupling efficiency. Upon request, we can provide select stock isolators in an optic mount with twin steel dowel pins for our FiberBench systems, as shown to the left.

We are also in the process of extending our fiber isolator capabilities down into the visible region. For more information, please contact Technical Support.

 

Make to Order Options

The expandable tables below provide information on some common isolator and rotator specials we have manufactured in the past. These specials are available with an average lead time of 2-4 weeks. Please use the Non-Stock Isolator Worksheet below for a quote.

Adjustable Narrowband Isolators
Center
Wavelength
Isolation, Beam Diameter (Max), Power (Max)
405 nm≥32 dB, Ø2.7 mm Beam, 3.5 W
≥32 dB, Ø4.7 mm Beam, 1.5 W
532 nm≥35 dB, Ø2.7 mm Beam, 3.0 W
633 nm≥35 dB, Ø4.7 mm Beam, 40 W
750 nm≥38 dB, Ø4.7 mm Beam, 40 W
810 nm≥38 dB, Ø4.7 mm Beam, 40 W
≥35 dB, Ø4.7 mm Beam, 1.7 W
915 nm≥35 dB, Ø4.7 mm Beam, 40 W
980 nm≥35 dB, Ø2.7 mm Beam, 0.7 W
≥35 dB, Ø2.7 mm Beam, 15 W
≥35 dB, Ø4.7 mm Beam, 1.7 W
1030 nm≥35 dB, Ø2.7 mm Beam, 15 W
≥35 dB, Ø4.7 mm Beam, 1.7 W
1150 nm≥38 dB, Ø4.7 mm Beam, 1.7 W
1220 nm
1310 nm≥36 dB, Ø4.7 mm Beam, 1.7 W
1390 nm≥38 dB, Ø3.6 mm Beam, 1.7 W
1480 nm≥38 dB, Ø4.7 mm Beam, 1.7 W
1550 nm
1650 nm
2050 nm≥28 dB, Ø4.7 mm Beam, 1.7 W
≥28 dB, Ø4.7 mm Beam, 20 W
Fixed Narrowband Isolators
Center
Wavelength
Isolation, Beam Diameter (Max), Power (Max)
440 nm≥30 dB, Ø2.7 mm Beam, 0.7 W
543 nm≥30 dB, Ø2.7 mm Beam, 0.7 W
594 nm≥30 dB, Ø2.7 mm Beam, 0.7 W
810 nm≥34 dB, Ø2.7 mm Beam, 0.7 W
1310 nm≥36 dB, Ø1.6 mm Beam, 0.2 W
Tandem Isolators
Center
Wavelength
Isolation, Beam Diameter (Max), Power (Max)
1150 nm≥60 dB, Ø3.6 mm Beam, 1.2 W
1220 nm
1310 nm
1390 nm
1480 nm
1650 nm
Faraday Rotators
Rotation: 45° ±3°
Center
Wavelength
Beam Diameter (Max), Power (Max)
405 nmØ2.7 mm Beam, 3.5 W
Ø4.7 mm Beam, 1.5 W
532 nmØ2.7 mm Beam, 15 W
Ø4.7 mm Beam, 40 W
543 nmØ2.7 mm Beam, 15 W
633 nmØ1.6 mm Beam, 6.0 W
Ø2.3 mm Beam, 8.0 W
Ø2.7 mm Beam, 12 W
Ø4.7 mm Beam, 40 W
660 nmØ2.7 mm Beam, 12 W
670 nmØ4.7 mm Beam, 40 W
780 nmØ2.7 mm Beam, 15 W
Ø4.7 mm Beam, 40 W
810 nm
830 nm
850 nm
980 nm
1030 nm
1150 nmØ3.6 mm Beam, 1.2 W
Ø4.7 mm Beam, 1.7 W
1220 nm
1310 nmØ1.6 mm Beam, 0.2 W
Ø2.3 mm Beam, 0.4 W
Ø3.6 mm Beam, 4.0 W
Ø4.7 mm Beam, 7.0 W
1390 nmØ3.6 mm Beam, 1.2 W
Ø4.7 mm Beam, 1.7 W
1480 nm
1550 nmØ1.6 mm Beam, 0.2 W
Ø2.3 mm Beam, 0.5 W
1650 nmØ3.6 mm Beam, 1.2 W
Ø4.7 mm Beam, 1.7 W
2050 nmØ3.6 mm Beam, 1.2 W
Ø4.7 mm Beam, 1.7 W
(Rotation for these isolators is 45° ±4°)

 

Custom Request Form

Request a custom isolator quote using the form below or by contacting us for more information at (973) 300-3000.

Non-Stock Isolator Worksheet:
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Free-Space Input
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Max 1/e2 Beam Diameter (mm):
Isolation (dB):
% Transmission:
Notes:
Fiber Input
Wavelength or Wavelength Range (nm):
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Polarization Sensitivity: Dependent   |   Independent
Isolation (dB):
% Transmission:
Fiber:
Fiber Connector: FC/PC   |  FC/APC   |  Other
Output: Fiber   |  Free-Space
Notes:

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Click the Support Documentation icon document icon or Part Number below to view the available support documentation
Part Number Product Description
CP03 Support Documentation CP03 : Ø35 mm Aperture, 30mm Cage Plate, 0.35" Thick
CP03/M Support Documentation CP03/M : Ø35 mm Aperture, 30 mm Cage Plate, 0.35" Thick, Metric
CP12 Support Documentation CP12 : 30 mm Cage Plate, Ø1.2" Double Bore for SM1 Lens Tube Mounting
H1C Support Documentation H1C : FiberBench Adapter for Free Space Isolator
IO-3-780-HP Support Documentation IO-3-780-HP : Free-Space Isolator, 780 nm, Ø2.7 mm Max Beam, 15 W Max
IO-3-850-HP Support Documentation IO-3-850-HP : Free-Space Isolator, 850 nm, Ø2.7 mm Max Beam, 15 W Max
IO-3D-1030-VLP Support Documentation IO-3D-1030-VLP : Free-Space Isolator, 1030 nm, Ø2.7 mm Max Beam, 700 mW
IO-3D-780-VLP Support Documentation IO-3D-780-VLP : Free-Space Isolator, 780 nm, Ø2.7 mm Max Beam, 0.7 W Max
IO-3D-830-VLP Support Documentation IO-3D-830-VLP : Free-Space Isolator, 830 nm, Ø2.7 mm Max Beam, 0.7 W Max
IO-3D-850-VLP Support Documentation IO-3D-850-VLP : Free-Space Isolator, 850 nm, Ø2.7 mm Max Beam, 0.7 W Max
IO-5-1030-HP Support Documentation IO-5-1030-HP : Free-Space Isolator, 1030 nm, Ø4.7 mm Max Beam, 40 W
IO-5-1030-VLP Support Documentation IO-5-1030-VLP : Free-Space Isolator, 1030 nm, Ø4.7 mm Max Beam, 1.7 W
IO-5-780-HP Support Documentation IO-5-780-HP : Free-Space Isolator, 780 nm, Ø4.7 mm Max Beam, 40 W Max
IO-5-780-VLP Support Documentation IO-5-780-VLP : Free-Space Isolator, 780 nm, Ø4.7 mm Max Beam, 1.7 W Max
IO-5-850-HP Support Documentation IO-5-850-HP : Free-Space Isolator, 850 nm, Ø4.7 mm Max Beam, 40 W Max
Part Number Product Description
IO-5-850-VLP Support Documentation IO-5-850-VLP : Free-Space Isolator, 850 nm, Ø4.7 mm Max Beam, 1.7 W Max
IO-5-980-HP Support Documentation IO-5-980-HP : Free-Space Isolator, 980 nm, Ø4.7 mm Max Beam, 40 W Max
IO-5-980-VLP Support Documentation IO-5-980-VLP : Free-Space Isolator, 980 nm, Ø4.7 mm Max Beam, 1.7 W Max
IO-D-780-VLP Support Documentation IO-D-780-VLP : Free-Space Isolator, 780 nm, Ø1.6 mm Max Beam, 0.2 W Max
IOT-5-780-MP Support Documentation IOT-5-780-MP : Free-Space Tandem Isolator, 780 nm, Ø4.7 mm Max Beam, 7.0 W Max
IOT-5-780-VLP Support Documentation IOT-5-780-VLP : Free-Space Tandem Isolator, 780 nm, Ø4.7 mm Max Beam, 1.7 W Max
IOT-5-850-MP Support Documentation IOT-5-850-MP : Free-Space Tandem Isolator, 850 nm, Ø4.7 mm Max Beam, 7.0 W Max
IOT-5-850-VLP Support Documentation IOT-5-850-VLP : Free-Space Tandem Isolator, 850 nm, Ø4.7 mm Max Beam, 1.7 W Max
IOT-5-980-VLP Support Documentation IOT-5-980-VLP : Free-Space Tandem Isolator, 980 nm, Ø4.7 mm Max Beam, 1.7 W Max
SM1B2 Support Documentation SM1B2 : Ø0.87" Isolator to SM1 Adapter
SM1RC Support Documentation SM1RC : Ø1" (SM1) Series Slim Lens Tube Slip Ring, 8-32 Tapped Hole
SM1RC/M Support Documentation SM1RC/M : Ø1" (SM1) Series Slim Lens Tube Slip Ring, M4 Tapped Hole
SM1TC Support Documentation SM1TC : Ø1" (SM1) Series Lens Tube Clamp
SM2A21 Support Documentation SM2A21 : Externally SM2-Threaded Mounting Adapter with Ø1.2" Bore and 2" Outer Diameter
SM3B2 Support Documentation SM3B2 : Ø2.0" Isolator to SM3 Adapter

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Posted Comments:
Poster: Thorlabs
Posted Date: 2010-11-04 14:23:45.0
Response from Javier at Thorlabs to rshewmon: Thank you very much for your feedback. We are currently working on revamping the design of many of the components used in our freespace isolators. Your input will be integrated into the design plan of these parts. I will keep you updated of the status of this project.
Poster: rshewmon
Posted Date: 2010-11-04 12:41:30.0
We use a handful of these isolators, they work pretty well but theres one complaint: does the input port really need to be shiny? If the beam going into the isolator gets a little bit misaligned, it can get reflected back to the source. Some competing brands (like Linos) have anodized aluminum around the input aperture.
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780 nm Polarization-Dependent Isolators

Click Image for Details IO-D-780-VLP IO-3D-780-VLP IO-3-780-HP IO-5-780-VLP IOT-5-780-VLP IOT-5-780-MP IO-5-780-HP
Item # IO-D-780-VLPa,b IO-3D-780-VLPb IO-3-780-HPc IO-5-780-VLP IOT-5-780-VLP IOT-5-780-MP IO-5-780-HPc
Type Fixed Narrowband Fixed Narrowband Adjustable Narrowband Adjustable Narrowband Tandem Adjustable Narrowband Tandem Adjustable Narrowband Adjustable Narrowband
Center Wavelength 780 nm 780 nm 780 nm 780 nm 780 nm 780 nm 780 nm
Tuning Range N/A N/A 760 - 800 nm 760 - 800 nm 760 - 800 nm 760 - 800 nm 760 - 800 nm
Operating Range 770 - 790 nm 760 - 800 nm 740 - 820 nm 740 - 820 nm 740 - 820 nm 740 - 820 nm 740 - 820 nm
Transmission 48 - 55% 86% 92% 85% 80% 80% 92%
Isolation 36 - 40 dB 34 - 40 dB 34 - 40 dB 35 dB (Min) 55 dB (Min) 60 dB (Min) 38 - 44 dB
Performance Graph
(Click for Details)
Isolator Performance Graph Isolator Performance Graph Isolator Performance Graph Isolator Performance Graph Isolator Performance Graph Isolator Performance Graph Isolator Performance Graph
Max Beam Diameterd 1.6 mm 2.7 mm 2.7 mm 4.7 mm 4.7 mm 4.7 mm 4.7 mm
Max Powere 0.2 W 0.7 W 15 W 1.7 W 1.7 W 7.0 W 40 W
Max Power Density 25 W/cm2 Blocking:f 25 W/cm2
Transmission:f 100 W/cm2
500 W/cm2 Blocking:f 25 W/cm2
Transmission:f 100 W/cm2
Blocking:f 25 W/cm2
Transmission:f 100 W/cm2
100 W/cm2 500 W/cm2
Compatible Mounting Adaptersg N/A H1C
SM1B2
CP12
SM1RCh (SM1RC/M)
SM1TC
SM2A21
  • The input aperture is in the black end of the cylinder, while the output aperture is in the gold end of the cylinder.
  • This isolator can be supplied in an optic mount with twin steel dowel pins for our FiberBench systems by contacting Tech Support prior to ordering.
  • This isolator has two exit ports for rejected beams. Adequate beam traps should be selected and positioned to ensure safety.
  • Defined as containing 100% of the beam energy.
  • The maximum power specification represents the maximum power for the combined forward and reverse directions. Therefore, the sum of the powers in the forward and reverse directions cannot exceed the maximum power specification.
  • The blocking power density corresponds to light polarized perpendicular to the transmission axis, while the transmission power density corresponds to light polarized parallel to the transmission axis.
  • Please see below for further details.
  • One SM1RC with an 8-32 tap is included with each of these isolators. For an SM1RC/M with an M4 tap, please contact Tech Support prior to ordering.
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal/Imperial Price Available / Ships
IO-D-780-VLP Support Documentation
IO-D-780-VLP Free-Space Isolator, 780 nm, Ø1.6 mm Max Beam, 0.2 W Max
$469.00
Today
IO-3D-780-VLP Support Documentation
IO-3D-780-VLP Free-Space Isolator, 780 nm, Ø2.7 mm Max Beam, 0.7 W Max
$950.00
Today
IO-3-780-HP Support Documentation
IO-3-780-HP Free-Space Isolator, 780 nm, Ø2.7 mm Max Beam, 15 W Max
$1,760.00
Today
IO-5-780-VLP Support Documentation
IO-5-780-VLP Customer Inspired! Free-Space Isolator, 780 nm, Ø4.7 mm Max Beam, 1.7 W Max
$1,050.00
Today
IOT-5-780-VLP Support Documentation
IOT-5-780-VLP Free-Space Tandem Isolator, 780 nm, Ø4.7 mm Max Beam, 1.7 W Max
$1,760.00
Today
IOT-5-780-MP Support Documentation
IOT-5-780-MP Customer Inspired! Free-Space Tandem Isolator, 780 nm, Ø4.7 mm Max Beam, 7.0 W Max
$3,000.00
Today
IO-5-780-HP Support Documentation
IO-5-780-HP Free-Space Isolator, 780 nm, Ø4.7 mm Max Beam, 40 W Max
$2,160.00
Today

830 - 850 nm Polarization-Dependent Isolators

Click Image for Details IO-3D-830-VLP IO-3D-850-VLP IO-3-850-HP IO-5-850-VLP IOT-5-850-VLP IOT-5-850-MP IO-5-850-HP
Item # IO-3D-830-VLPa IO-3D-850-VLPa IO-3-850-HPb IO-5-850-VLP IOT-5-850-VLP IOT-5-850-MP IO-5-850-HPb
Type Fixed Narrowband Fixed Narrowband Adjustable Narrowband Adjustable Narrowband Tandem Adjustable Narrowband Tandem Adjustable Narrowband Adjustable Narrowband
Center Wavelength 830 nm 850 nm 850 nm 850 nm 850 nm 850 nm 850 nm
Tuning Range N/A N/A 835 - 865 nm 830 - 870 nm 830 - 870 nm 830 - 870 nm 835 - 865 nm
Operating Range 810 - 850 nm 830 - 870 nm 810 - 890 nm 810 - 890 nm 820 - 890 nm 810 - 890 nm 810 - 890 nm
Transmission 86% 86% 92% 88% 80% 80% 92%
Isolation 34 - 40 dB 34 - 40 dB 34 - 40 dB 35 dB (Min) 55 dB (Min) 60 dB (Min) 38 - 44 dB
Performance Graph
(Click for Details)
Isolator Performance Graph Isolator Performance Graph Isolator Performance Graph Isolator Performance Graph Isolator Performance Graph Isolator Performance Graph Isolator Performance Graph
Max Beam Diameterc 2.7 mm 2.7 mm 2.7 mm 4.7 mm 4.7 mm 4.7 mm 4.7 mm
Max Powerd 0.7 W 0.7 W 15 W 1.7 W 1.7 W 7.0 W 40 W
Max Power Density Blocking:e 25 W/cm2
Transmission:e 100 W/cm2
Blocking:e 25 W/cm2
Transmission:e 100 W/cm2
500 W/cm2 Blocking:e 25 W/cm2
Transmission:e 100 W/cm2
Blocking:e 25 W/cm2
Transmission:e 100 W/cm2
100 W/cm2 500 W/cm2
Compatible Mounting Adaptersf H1C
SM1B2
CP12
SM1RCg (SM1RC/M)
SM1TC
SM2A21
  • This isolator can be supplied in an optic mount with twin steel dowel pins for our FiberBench systems by contacting Tech Support prior to ordering.
  • This isolator has two exit ports for rejected beams. Adequate beam traps should be selected and positioned to ensure safety.
  • Defined as containing 100% of the beam energy.
  • The maximum power specification represents the maximum power for the combined forward and reverse directions. Therefore, the sum of the powers in the forward and reverse directions cannot exceed the maximum power specification.
  • The blocking power density corresponds to light polarized perpendicular to the transmission axis, while the transmission power density corresponds to light polarized parallel to the transmission axis.
  • Please see below for further details.
  • One SM1RC with an 8-32 tap is included with each of these isolators. For an SM1RC/M with an M4 tap, please contact Tech Support prior to ordering.
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal/Imperial Price Available / Ships
IO-3D-830-VLP Support Documentation
IO-3D-830-VLP Free-Space Isolator, 830 nm, Ø2.7 mm Max Beam, 0.7 W Max
$950.00
Today
IO-3D-850-VLP Support Documentation
IO-3D-850-VLP Free-Space Isolator, 850 nm, Ø2.7 mm Max Beam, 0.7 W Max
$950.00
Today
IO-3-850-HP Support Documentation
IO-3-850-HP Free-Space Isolator, 850 nm, Ø2.7 mm Max Beam, 15 W Max
$1,760.00
Today
IO-5-850-VLP Support Documentation
IO-5-850-VLP Customer Inspired! Free-Space Isolator, 850 nm, Ø4.7 mm Max Beam, 1.7 W Max
$1,050.00
Today
IOT-5-850-VLP Support Documentation
IOT-5-850-VLP Free-Space Tandem Isolator, 850 nm, Ø4.7 mm Max Beam, 1.7 W Max
$1,760.00
Today
IOT-5-850-MP Support Documentation
IOT-5-850-MP Customer Inspired! Free-Space Tandem Isolator, 850 nm, Ø4.7 mm Max Beam, 7.0 W Max
$3,000.00
Today
IO-5-850-HP Support Documentation
IO-5-850-HP Free-Space Isolator, 850 nm, Ø4.7 mm Max Beam, 40 W Max
$2,160.00
Today

980 nm Polarization-Dependent Isolators

Click Image for Details IO-5-980-VLP IOT-5-980-VLP IO-5-980-HP
Item # IO-5-980-VLP IOT-5-980-VLPa IO-5-980-HPb
Type Adjustable Narrowband Tandem Adjustable Narrowband Adjustable Narrowband
Center Wavelength 980 nm 980 nm 980 nm
Tuning Range 960 - 1000 nm 965 - 995 nm 965 - 995 nm
Operating Range 940 - 1020 nm 950 - 1010 nm 950 - 1010 nm
Transmission 90% 80% 93%
Isolation 38 - 40 dB 55 dB (Min) 38 - 44 dB
Performance Graph
(Click for Details)
Isolator Performance Graph Isolator Performance Graph Isolator Performance Graph
Max Beam Diameterc 4.7 mm 4.7 mm 4.7 mm
Max Powerd 1.7 W 1.7 W 40 W
Max Power Density Blocking:e 25 W/cm2
Transmission:e 100 W/cm2
Blocking:e 25 W/cm2
Transmission:e 100 W/cm2
500 W/cm2
Compatible Mounting Adaptersf CP12
SM1RCg (SM1RC/M)
SM1TC
SM2A21
CP03 (CP03/M) CP12
SM1RCg (SM1RC/M)
SM1TC
SM2A21
  • The mounting saddle contains one 8-32 and two 1/4"-20 taps. For an M4- and M6-threaded saddle, please contact Tech Support prior to ordering.
  • This isolator has two exit ports for rejected beams. Adequate beam traps should be selected and positioned to ensure safety.
  • Defined as containing 100% of the beam energy.
  • The maximum power specification represents the maximum power for the combined forward and reverse directions. Therefore, the sum of the powers in the forward and reverse directions cannot exceed the maximum power specification.
  • The blocking power density corresponds to light polarized perpendicular to the transmission axis, while the transmission power density corresponds to light polarized parallel to the transmission axis.
  • Please see below for further details.
  • One SM1RC with an 8-32 tap is included with this isolator. For an SM1RC/M with an M4 tap, please contact Tech Support prior to ordering.
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal/Imperial Price Available / Ships
IO-5-980-VLP Support Documentation
IO-5-980-VLP Free-Space Isolator, 980 nm, Ø4.7 mm Max Beam, 1.7 W Max
$1,500.00
Today
IOT-5-980-VLP Support Documentation
IOT-5-980-VLP Free-Space Tandem Isolator, 980 nm, Ø4.7 mm Max Beam, 1.7 W Max
$3,000.00
Today
IO-5-980-HP Support Documentation
IO-5-980-HP Free-Space Isolator, 980 nm, Ø4.7 mm Max Beam, 40 W Max
$2,710.00
Today

1030 nm Polarization-Dependent Isolators

Click Image for Details IO-3D-1030-VLP IO-5-1030-VLP IO-5-1030-HP
Item # IO-3D-1030-VLPa IO-5-1030-VLPb IO-5-1030-HPb,c
Type Fixed Narrowband Adjustable Narrowband Adjustable Narrowband
Center Wavelength 1030 nm 1030 nm 1030 nm
Tuning Range N/A 1010 - 1050 nm 1010 - 1050 nm
Operating Range 1010 - 1050 nm 990 - 1070 nmd 1000 - 1060 nmd
Transmission 90% 90% 93%
Isolation 38 - 44 dB 35 - 40 dB 38 - 44 dB
Performance Graph
(Click for Details)
Isolator Performance Graph Isolator Performance Graph Isolator Performance Graph
Max Beam Diametere 2.7 mm 4.7 mm 4.7 mm
Max Powerf 700 mW 1.7 W 40 W
Max Power Density Blocking:g 25 W/cm2
Transmission:g 100 W/cm2
Blocking:g 25 W/cm2
Transmission:g 100 W/cm2
500 W/cm2
Compatible Mounting Adaptersh CP12
SM1RCi (SM1RC/M)
SM1TC
SM2A21
SM3B2
  • This isolator can be supplied in an optic mount with twin steel dowel pins for our FiberBench systems by contacting Tech Support prior to ordering.
  • The housing of this isolator cannot be freely rotated in its saddle. However, tapped holes in the housing allow the isolator to be mounted with the polarization axis either parallel or perpendicular to the base of the mount. If you require free-rotation for your setup, consider using an SM3B2 adapter (see below for details).
  • This isolator has two exit ports for rejected beams. Adequate beam traps should be selected and positioned to ensure safety.
  • For applications near 1064 nm, Thorlabs offers Nd:YAG isolators.
  • Defined as containing 100% of the beam energy.
  • The maximum power specification represents the maximum power for the combined forward and reverse directions. Therefore, the sum of the powers in the forward and reverse directions cannot exceed the maximum power specification.
  • The blocking power density corresponds to light polarized perpendicular to the transmission axis, while the transmission power density corresponds to light polarized parallel to the transmission axis.
  • Please see below for further details.
  • One SM1RC with an 8-32 tap is included with this isolator. For an SM1RC/M with an M4 tap, please contact Tech Support prior to ordering.
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal/Imperial Price Available / Ships
IO-3D-1030-VLP Support Documentation
IO-3D-1030-VLP Free-Space Isolator, 1030 nm, Ø2.7 mm Max Beam, 700 mW
$1,635.00
Today
IO-5-1030-VLP Support Documentation
IO-5-1030-VLP Free-Space Isolator, 1030 nm, Ø4.7 mm Max Beam, 1.7 W
$1,950.00
Today
IO-5-1030-HP Support Documentation
IO-5-1030-HP Free-Space Isolator, 1030 nm, Ø4.7 mm Max Beam, 40 W
$2,435.00
Today

Isolator Mounting Adapters

These adapters provide mechanical compatibility between our isolator bodies and SM1 (1.035"-40) lens tubes, SM2 (2.035"-40) lens tubes, SM3 (3.035"-40) lens tubes, 30 mm cage systems, Ø1/2" posts, and our FiberBench systems.

Click Image to Enlarge H1C SM1B2 CP12 SM1RC SM1TC SM2A21 CP03 SM3B2
Item # H1C SM1B2 CP12 SM1RC(/M) SM1TC SM2A21 CP03(/M) SM3B2
Isolator Diameter 0.87" 0.87" 1.2" 1.2" 1.2" 1.2" 1.38" 2.0"
Mounting Options FiberBench Systems SM1 Lens Tubes 30 mm Cage Systems Ø1/2" Posts Ø1/2" Posts SM2 Lens Tubes or Mechanics with Ø2" Bore 30 mm Cage Systems SM3 Lens Tubes
Compatible Isolators IO-3D-780-VLP
IO-3D-830-VLP
IO-3D-850-VLP
IO-5-780-VLP
IOT-5-780-VLP
IOT-5-780-MP
IO-3-780-HP
IO-5-780-HP
IO-5-780-VLP
IOT-5-850-VLP
IOT-5-850-MP
IO-3-850-HP
IO-5-850-VLP
IO-5-850-HP
IO-5-980-VLP
IO-5-980-HP
IO-3D-1030-VLP
IOT-5-980-VLP IO-5-1030-VLP
IO-5-1030-HP
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal/Imperial Price Available / Ships
H1C Support Documentation
H1C FiberBench Adapter for Free Space Isolator
$67.63
Today
SM1B2 Support Documentation
SM1B2 Ø0.87" Isolator to SM1 Adapter
$23.00
Today
CP12 Support Documentation
CP12 Customer Inspired! 30 mm Cage Plate, Ø1.2" Double Bore for SM1 Lens Tube Mounting
$20.00
Today
SM1RC Support Documentation
SM1RC Ø1" (SM1) Series Slim Lens Tube Slip Ring, 8-32 Tapped Hole
$22.00
Today
SM1TC Support Documentation
SM1TC Ø1" (SM1) Series Lens Tube Clamp
$40.00
Today
SM2A21 Support Documentation
SM2A21 Externally SM2-Threaded Mounting Adapter with Ø1.2" Bore and 2" Outer Diameter
$42.90
Today
CP03 Support Documentation
CP03 Ø35 mm Aperture, 30mm Cage Plate, 0.35" Thick
$18.00
Today
SM3B2 Support Documentation
SM3B2 Ø2.0" Isolator to SM3 Adapter
$45.00
Today
+1 Qty Docs Part Number - Metric Price Available / Ships
SM1RC/M Support Documentation
SM1RC/M Ø1" (SM1) Series Slim Lens Tube Slip Ring, M4 Tapped Hole
$22.00
Today
CP03/M Support Documentation
CP03/M Ø35 mm Aperture, 30 mm Cage Plate, 0.35" Thick, Metric
$18.00
Today
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