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Achromatic Waveplate

Unlike standard waveplates, Achromatic Waveplates, AWP, provide a constant phase shift independent of the wavelength of light that is used.This wavelength independence is achieved by using two different crystalline materials to yield quarter- or half-wave retardation over a broad spectral range.The Retardation tolerance of our AWPs is better than λ/300 over the entire wavelength range.The flat response of an AWP is ideal for use with tunable lasers,multiple laser-line systems and other broad spectrum sources

Crysor’s AWPs are designed to effectively eliminate the wavelength dependence over a wide spectral range,typically several hundred nanometers.Our AWPs are available for four wavelength ranges:VIS (450-680nm),NIR (700-1000nm),950-1300,1200-1650.The AWPs are air spaced construction in a black anodized aluminum housing.Fast axis is marked on the mount.Custom assemblies,including cemented versions,are available to meet your specific requirements.

Material : Crystal Quartz & MgF2
Parallelism <30 arc sec
Diameter Tolerance:  +0.0, -0.2
Surface Quality :  40/20 scratch dig
Retardance:  λ/2 andλ/4
Retardation Tolerance <λ/300 over wavelength range
Wavefornt Distortion: λ/4@633nm
AR Coated: Rave<0.8%@450-680   Rave<0.8%@700-1000; Rave<0.5%@950-1300  Rave<0.5%@1200-1650
Wavelength Ranges: 450~680nm,700~1000nm,950~1300nm ,1200~1650nm