Polarization Optics

Part NumberWavelength (nm)Diameter (mm)RetardanceType
WPT-VIS-Q400-7000.5/1/1.5/2λ/4Cemented/Optical Contact/Air-spaced
WPT-VIS-H400-7000.5/1/1.5/2λ/2Cemented/Optical Contact/Air-spaced
WPT-NIR-Q700-11000.5/1/1.5/2λ/4Cemented/Optical Contact/Air-spaced
WPT-NIR-H700-11000.5/1/1.5/2λ/2Cemented/Optical Contact/Air-spaced
WPT-IR-Q1100-16500.5/1/1.5/2λ/4Cemented/Optical Contact/Air-spaced
WPT-IR-H1100-16500.5/1/1.5/2λ/2Cemented/Optical Contact/Air-spaced

Description (Achromatic Waveplate)

Achromatic Waveplates Diagram

Achromatic Waveplates are available over a wide spectral range (Visible – IR) in two types (λ/4, λ/2) and have many choices in size. The slow and fast axes of two respective birefringent materials (Quartz & MgF2) are linked together by cementing/air-spacing to form these waveplates. The material MgF2 helps in abating the wavelength dependence of phase retardation in these waveplates. Thus, giving access to a flat response over a wide range of wavelength. With this feature of having large bandwidth, these waveplates are used with tunable lasers, multiple laser line systems and, other broad-spectrum sources. Wavelength Opto-Electronic now can produce customized achromatic waveplates with many options with coating, without coating, in various sizes and having different design wavelengths than those presented below.

Crystal Quartz (SiO2) & Magnesium Fluoride (MgF2)
Operating Wavelength: Visible 400-700nm | Near IR 700-1100nm | IR 1100-1650nm
Surface Quality: 40/20 Scratch and Dig
Type: Cemented | Air-Spaced
Retardation: Quarter-Wave (λ/4) & Half-Wave (λ/4)
Mount: Black Anodized Aluminium
Diameter: 0.5″, 1″, 1.5″ & 2″
Dimension Tolerance: +0.0/-0.2mm
Damage Threshold: 500mJ/cm2, 20ns, 20Hz @ 1064nm

Description (True Zero-Order Waveplate)

True Order Zero Waveplates Diagram

A single birefringent material is made into a thin plate at a specific zero-order level of retardation is known as True zero-order waveplate. The thinness of a plate makes optical fabrication difficult and the handling delicate. Despite that provides a large field angle, independent of temperature changes, and has greater retardation stability to wavelength shifts. The delicacy in handling and difficulty in optical assembling can be eliminated either by cementing, optical contacting, or air-spacing a zero-order waveplate to a thicker glass plate (non-birefringent) and attains mechanical stabilization. These waveplates are applicable in observing broad-spectral wavelength range, in taking temperature-independent measurements and for imaging systems necessitating large field angle.

Wavelength Opto-Electronic provides Zero-Order Waveplates at various wavelengths in different sizes and different mechanical stabilities. We also provide customized zero-order waveplates to meet your requirements.

Crystal, Quartz (SiO2)
Wavelength: 355, 532, 980, 1034 & 1550nm
Surface Quality: 20/10 Scratch and Dig
Type: Cemented / Air-Spaced / Optical Contact
Retardation: Quarter-Wave (λ/4) & Half-Wave (λ/4)
Substrate: N-BK7
Diameter: 0.5″, 1″, 1.5″ & 2″
Dimension Tolerance: +0.0/-0.2mm
Damage Threshold: >500mJ/cm2, 20ns, 20Hz @ 1064nm

Description (Multi-Order Waveplate)

Multi-Order Waveplates Diagram

A Waveplate of single birefringent material producing an integer multiple of retardance besides the desired fractional retardance is called Multi-Order Waveplate. It has wavelength-dependent and temperature-dependent retardance more than a zero-order waveplate. Hence, these waveplates are mostly used in low power applications and also in the applications where the retardance is independent of wavelength and temperature. Wavelength Opto-Electronic put forward multi-order waveplates at different design wavelengths, sizes and also can customize other than what is presented below.

Crystal, Quartz (SiO2)
Wavelength: 355, 532, 980, 1034 & 1550nm
Surface Quality: 20/10 scratch and dig
Waveplate Thickness: 0.3-0.5mm
Retardation: Quarter-Wave (λ/4) & Half-Wave (λ/4)
Diameter: 0.5″, 1″, 1.5″ & 2″
Dimension Tolerance: +0.0/-0.2mm
Damage Threshold: >500mJ/cm2, 20ns, 20Hz @ 1064nm


Polarization Optics Polarizer

Part NumberWavelength (nm)MaterialClear Aperture (mm)Diameter (mm)Type

Glan-type Polarizers are designed to transmit only extra-ordinary light using birefringent crystals such as Calcite, Yttrium Orthovanadate, and Beta Barium Borate from UV-IR wavelength range. Wavelength Opto-Electronics offers three types of Glan-Type Polarizers:

1. Glan-Laser

Glan Laser Polarizers Diagram
2. Glan-Taylor

Glan Taylor Polarizers Diagram
3. Glan-Thompson 

Glan Thompson Polarizers Diagram

Glan-Thompson, Glan-Taylor & Glan-Laser Polarizers are designed for low, medium, and high power applications respectively. Glan-Type Polarizers are applicable in situations where greater extinction ratios, greater polarization purities, and broad spectral ranges are required.

Calcite, α-BBO, YVO4
Wavelength: 350-2300nm (Calcite) | 500-4000nm (YVO4) | 220-3000nm (α-BBO)
Surface Quality: 20/10 scratch and dig
Polarizer Type: Taylor, Laser, Thompson
Surface Contact Type: Air-Spaced, Cemented
Diameter: 1″
Extinction Ratio: Tp/T> 5 x 10-6: 1 (YVO4α-BBO), 5 x 10-51 (Calcite)
Angular Field: >6, >6.5, >7.7
Clear Aperture: 8/10/12.7mm
Damage Threshold: >1J/cm2


ZnSe Prism

Part No.MaterialL1 (mm)L2 (nm)H (mm)


ZnSe Prism Diagram

Attenuated Total Reflection (ATR) Prism uses the property of total internal reflection and attenuates the reflected light by forming an evanescent wave while penetrating some (0.5-2µm) into the sample.  The penetration depth into the sample depends on the refractive index of sample and prism, incident angle, wavelength, sample contact, and reactivity of the material. This prism is useful in Fourier Transform Infrared (FTIR) spectroscopy to analyze the sample properties.  Customized ATR Prism is available upon request.

Material: Zinc Selenide (ZnSe)
Dimensional Tolerance: +/- 0.1mm
Type: Attenuated
Angular Deviation: 0.2°
Surface Quality: 60/40
Coating: Options Available

ZnSe Prism Rhomb

Part NumberWavelength (µm)Dimensions (mm)AngleRetardation
WFP4-51.5×13.2x12Z8.0 – 12.051.5 x 13.2 x 12.065°, 115°λ/4
WFP4-58.3x15x13.6Z8.0 – 12.058.3 x 15.0 x 13.665°, 115°λ/4
WFP2-26.5x15x39.1Z8.0 – 12.026.5 x 15.0 x 39.1123°, 147°λ/2


ZnSe Prism Rhomb Diagram 4 ZnSe Prism Rhomb Diagram 3 ZnSe Prism Rhomb Diagram 2

Fresnel prism rhomb is advantageous than reflective phase retarder and waveplate that use birefringence material.  The retardation depends on the index of refraction of material and geometry but not the design wavelength.  The desired phase shift can be constructed by shining light in the 8-12µm region at a selected incident angle, allowing it to make the required number of internal reflections by using the principle of total internal reflection.  The rhomb improves the quality of laser cutting in laser processing applications. We offer customization of prism rhomb to meet the specific customer needs.


Material: Zinc Selenide (ZnSe)
Dimensional Tolerance: +/- 0.1mm
Type: Quarter Wave & Half-Wave
Angular Deviation: 0.2°
Surface Quality: 60/40
Coating: Options Available
Polishing: required@ Input, output, top and bottom surfaces

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