This document discusses high transmission polarizers made from calcite or YVO4 crystals. These polarizers have an incidence angle cut at the Brewster angle, which improves transmission up to 98% over a wide wavelength range without coating. They are not recommended for large acceptance angles to maintain high transmission across wavelengths. Specifications for calcite and YVO4 polarizers are provided, including wavelength range, extinction ratio, surface quality, damage threshold, and mount.

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HIGH TRANSMSSION POLARIZER
High Transmission Glan Laser Polarizers is a special type of Glan Laser
Polarizers. Its incidence angle is brewster angle cut which can greatly improve
the transmission ray up to 98% in a wide range of wavelength without coating.
The polarizer can be made from Calcite or YVO4 crystals. In order to get
transmission of a wide range of wavelength, the polarizers are not
recommended to use for large acceptance angle. It is typically used at the
angle within+/-5°
.
Photonchina Specifications：
Material: Calcite or YVO 4
Wavelength Range: Calcite:350～2300 nm, YVO4:500～4000 nm
Extinction Ratio: Calcite:<5x10-5 ; YVO 4 :<5x10-6
Surface Quality: 20 / 10
Beam Deviation: < 3 arc minutes
Wavefront
Distortion:
λ /4@633nm
Damage
Threshold:
>500 MW/cm2
Coating: uncoated
Mount: Black Anodized Aluminium

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1. Calcite High Transmission Glan Laser Polarizer
Wavelength
Range(nm)
Extinction
Ratio
Angular
Field(°
)
C.A.
fa(mm)
O.D.
fd(mm)
L ±0.1(mm) Beam offset
350-2300 <5x10-5 5
6.0 25.4 25.0 5.5
8.0 25.4 32.0 7.8
10.0 30.0 38.0 9.3
15.0 38.0 54.0 1.0
2. YVO4 High Transmission Glan Laser Polarizer
Wavelength
Range(nm)
Extinction
Ratio
Angular
Field(°
)
C.A.
fa(mm)
O.D.
fd(mm)
L ±0.1(mm) Beam offset
500-4000 <5x10-6 5
6.0 25.4 28.0 5.5
8.0 30.0 38.0 13.3
10.0 38.0 45.0 16.0