Material: N-BK7 glass or UV grade fused silica (UVFS).
Based on the principle that total internal reflection produces a phase retardation
between p- and s-components.
The retardation is insensitive to wavelength with an extremely large bandwidth.
λ/2 rhombs are made of two λ/4 rhombs optically contacted.
λ/4 retarder causes a beam displacement ~ 1.3 x the aperture. λ/2 does not.
Standard aperture 10x10 mm, OD 1.5" (38.1 mm).
Apertures 12x12 mm, 15x15 mm are available upon request.
Standard retarders are uncoated. AR coatings are available upon request.
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Dimensions Tolerance: +0.0, - 0.2 mm
Flatness: < λ/10 @ 632.8 nm
Surface Quality: 20-10 scratch and dig
Coating: Uncoated for the standard products,
AR coatings at the specified wavelengths available upon request.
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