Waveplates

AWP-25.4H-1200

1
Achromatic wave plate (φ25.4mm 1/2λ)
Estimate separately
Classification Achromatic wave plate (AWP)
Wave plate type (phase contrast) 1/2λ
YESRoHS対応状況

Product documentation

Description

Unlike standard waveplates, Achromatic waveplates (retarders) provides 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. The flat response of an achromatic waveplate (retarder) is 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 11.5mm clear aperture waveplates feature an air spaced construction; the 23mm clear aperture waveplates are cemented. All achromatic aaveplates (retarders) are mounted in an anodized aluminum housing with the fast axis clearly indicated.

Specifications

Classification Achromatic wave plate (AWP)
Wave plate type (phase contrast) 1/2λ
Design Wavelength DWL 1200-1650nm
Outside diameter(mm) φ25.4
Clear Aperture(mm) φ11.5
Frame thickness(mm) 9
Frame thickness tolerance(mm) ±0.1
Material Quartz + MgF2
Retardation tolerance 1/100λ(@design wavelengt range)
Transmitted Wavefront 1/4λ(@632.8nm)
Parallelism <1′
Surface quality 20 - 10
Damage Threshold, Pulsed 500kW/cm2(@CW) 2J/cm2(@1064nm 8ns pulse)
Coating R<1% per surface (@design wavelength)

Curve(FOR REFERENCE ONLY)

Specification drawings(or pictures)