Fresnel Rhomb Retarders
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.
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| Part Number | Wavelength (µm) | Dimensions (mm) | Angle | Retardation |
|---|---|---|---|---|
| WFP4-51.5x13.2x12Z | 8.0 - 12.0 | 51.5 x 13.2 x 12.0 | 65°, 115° | λ/4 |
| WFP4-58.3x15x13.6Z | 8.0 - 12.0 | 58.3 x 15.0 x 13.6 | 65°, 115° | λ/4 |
| WFP2-26.5x15x39.1Z | 8.0 - 12.0 | 26.5 x 15.0 x 39.1 | 123°, 147° | λ/2 |
 |  |  |
| 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 | ||
Knowledge Hub
Fresnel Rhomb Wave Retarders are made of common glass. The Retardation of Fresnel Rhomb retarders only depends on the refractive index and geometry of the...
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