25.4mm Dia, 700-1000nm, λ/4 Achromatic Waveplate

Product Details Multiple Wavelength Ranges Available Flat Response Over Each Broad Spectral Range λ/4 and λ/2 Retardance Mounted in Black Anodized Aluminum Housing Achromatic Waveplates (Retarders) provide a constant phase shift independent of the wavelength of light that is used. This wavelength independence is achieved by using two different birefringent crystalline materials. The relative shifts in retardation over the wavelength range are balanced between the two materials used. Achromatic Waveplates (Retarders), with their flat response, are ideal for use with tunable lasers, multiple laser line systems, and other broad-spectrum sources. Designed to be used at an angle of incidence of 0°, changes of ±3° will yield less than 1% change in retardance. The 23mm clear aperture waveplates will feature a cemented construction. All Achromatic Waveplates (Retarders) are mounted in an anodized aluminum housing with the fast axis clearly indicated. Specifications General Type: Achromatic Waveplate Configuration: Air Spaced Physical & Mechanical Properties Clear Aperture CA (mm): 11.5 Diameter (mm): 25.40 Thickness (mm): 8.00 ±0.1 Parallelism (arcmin): <1 Dimensional Tolerance (mm): +0/-0.25 Construction: Crystalline Housing Tolerance (mm): +0/-0.25 Optical Properties Coating: R avg <0.6% @ 700 - 1000nm Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More Crystal Quartz and MgF 2 Retardance: λ/4 Surface Quality: 20-10 Transmitted Wavefront, P-V: λ/4 @ 633nm Retardance Tolerance: ≤ λ/100 Temperature Coefficient (λ/°C): <1/500 Coating Specification: R avg <0.6% @ 700 - 1000nm Wavelength Range (nm): 700 - 1000 Damage Threshold, By Design: Damage threshold for optical components varies by substrate material and coating. Click here to learn more about this specification. 500 kW/cm 2 Regulatory Compliance RoHS 2015: Compliant × Reach 209: Compliant × Certificate of Conformance: View ×