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TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More

25.4mm NIR II λ/4 Fresnel Rhomb Retarder

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Specifications

General

Type:
Fresnel Retarder

Physical & Mechanical Properties

Clear Aperture CA (mm):
18.81 x 18.81
Dimensional Tolerance (mm):
±0.10
Bevel:
Protective bevel as needed
Width (mm):
25.40

Optical Properties

Coating:
NIR II (750-1550nm)
Design Wavelength DWL (nm):
1064
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Retardance:
λ/4
Surface Quality:
20-10
Wavelength Range (nm):
750 - 1550
Entrance and Exit Surface (mm):
25.4

Regulatory Compliance

RoHS 2015:
Certificate of Conformance:
Reach 235:

Product Details

  • Broadband Performance with <2% Retardance Variation
  • 12.7mm and 25.4mm Options Available
  • λ/4 and λ/2 Retardance Options

TECHSPEC® Fresnel Rhomb Retarders are available with design wavelengths of 532nm and 1064nm. By utilizing a specific angle, Fresnel rhomb retarders impart a retardance with each internal reflection of the light, totaling λ/4. Each design is paired with either VIS 0° or NIR II coatings to provide efficient transmission across a broad range of wavelengths. These TECHSPEC Fresnel Rhomb Retarders deliver less than 2% retardance variation across the specified wavelength range and are optimized for use in diode and fiber applications.

Technical Information

Resources

Filter

Introduction to Polarization

Is polarization a new topic for you? Learn about key terminology, types, and more information to help you understand polarization at Edmund Optics.

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Laser-Cut Polymer Polarizer and Retarder Quote Tool

Polymer Polarizers and Retarders

Polymer polarizers and retarders, consisting of sheets of polyvinyl alcohol and TAC cellulose triacetate, alter the polarization of light.

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Polarizer Selection Guide

Edmund Optics' Polarizer Selection Guide refines your search for a specific type of polarizer.

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Understanding Waveplates and Retarders

Waveplates (retarders) are different when used in polarized light than unpolarized light. Consider terminology, fabrication, or applications at Edmund Optics.

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How Do 3D Movies Work? Polarization

Optical Engineer Katie Schwertz explains how 3D movies work because of polarization in a kid-friendly way.

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Polarization Overview - Part 1: Polarization Basics

Polarizers are optical components designed to filter, modify, or analyze the various polarization states of light.

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Polarization Overview - Part 2: Waveplates & Retarders (Advanced)

Waveplates and retarders are optical components designed to transmit light while modifying its polarization state without attenuating, deviating, or displacing the beam.

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You offer many types of polarizers. What are some key benefits to help me decide which is best for my application?

Are the polarizers shipped with a protective film?

What is the difference between s- and p-polarization states?

What are the meanings for the different terms used for polarizers?

How can I tell what the polarization axis is for a linear polarizer?

When you list the average transmission of a polarizer, what is the difference between single, parallel, and crossed?

I have a linear polarizer glass filter and would like to create circularly polarized light. What type of optics do I need for this?

What is the maximum amount of light a polarizer can transmit?

Does the circular polarizer material have to face a particular direction?

What is the fast and slow axis of a retarder and how do they differ?

How can I find the fast and slow axes of a retarder?

What is the difference between multiple and zero-order retarders and when should I pick one over the other?

How can I determine if a retarder is quarter or half wave?

Can I adapt a retarder for use with a specific wavelength other than the design wavelength?

What is the benefit of polymer retarders?

Analyzer

Birefringence

Circular Polarizer

Polarization

Polarizer

Polarizing Efficiency

P-Polarization

Retardance

Retarder (Waveplate)

S-Polarization

Unpolarized

Wire Grid Polarizer

Successful Light Polarization Techniques

Are you looking for a solution to common imaging problems? Discover different polarization techniques to improve your image at Edmund Optics.

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Polarization Directed Flat Lenses Product Review

Polarization Directed Flat Lenses, which are formed with polymerized liquid crystal thin-film, create a focal length that is dependent on polarization state.

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Polarizers Review

Polarizers are used in a wide range of imaging and research and development applications.

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Does the polarization of light change after reflecting off a mirror?

Do diffusers affect the polarization of light?

Does the polarization of light change when it passes through a beamsplitter?

I would like to split light from a circularly polarized laser source into two beams. What happens when it passes through a cube beamsplitter – both non-polarizing and polarizing?

Does light entering a multimode fiber undergo a polarization change during propagation through the fiber? If so, can the emerging light be linearly polarized by placing a polarizer at the fiber’s output end?

Why does the polarization of a laser matter?

The polarization state of a laser source is important for many different applications.

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Extinction Ratio

Non-Polarizing Beamsplitter

Polarizing Beamsplitter

Optical Microscopy Application: Differential Interference Contrast

Differential interference contrast (DIC) is one of the polarization techniques that can be used in optical microscopy. Learn about this technique at Edmund Optics.

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Laser Polarization: The Importance of Polarization in Laser Applications

Understanding the polarization of laser light is critical for many applications, as polarization impacts reflectance, focusing the beam, and other key behaviors.

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