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It is constructed of two multi-order waveplates with their axis crossed. Thus, it performs as a zero-order waveplate because of the effect of two plates counteracting each other. It has wide temperature bandwidth and wavelength bandwidth properties. Because it is cemented, the damage threshold must be considered (about 10KW/cm2) when used.
Cemented or Optically Contacted Zero-Order Waveplate
Specifications:
Material: Crystal Quartz
Dimension Tolerance: +0.0, -0.2 mm
Wavefront Distortion: < λ/8 @ 632.8 nm
Retardation: λ/8, λ/4, λ/2 or λ (typical)
Retardation Tolerance: < λ/500 (typical)
Wavelength Range: 400-2100 nm
Parallelism: <1 arc second
Surface Quality: 20-10 scratch and dig
Airspaced Zero-order Waveplate
Its performance is as good as cemented zero-order waveplate. Additionally, the air-spaced construction enables it is suitable for the high power laser application. The damage threshold is more than 500 MW/cm2.
Specifications:
Material: Crystal Quartz
Dimension Tolerance: +0.0, -0.2 mm
Wavefront Distortion: <λ/8 @ 632.8 nm
Retardation: λ/8, λ/4, λ/2 or λ (typical)
Retardation Tolerance: < λ/500 (typical)
Wavelength Range: 240-2100 nm
Parallelism: <1 arc second
Surface Quality: 20-10 scratch and dig
AR/AR Coating R<0.2% per face is available upon request.
Other retardations are also available.