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Glan Polarizers

Optics, filters & coatings

Glan Polarizers

Glan polarizers made from select-grade calcite prism pairs with the interface angles optimised for minimum insertion loss, assembled air-spaced. Glan-laser polarizers have two escape windows that let the rejected beam leave the polarizer, and are normally used in Q-switched laser cavities and other multiple-pass applications. Glan-Taylor and Glan-Thompson polarizers are also available.

Glan-Taylor polarizer

ParameterValue
Materiala-BBO, Calcite, YVO4
Wavelength Rangea-BBO: 220-3000nm; Calcite: 350-2300nm; YVO4: 500-4000nm
Extinction Ratio<5×10⁻⁶
Surface Quality20/10 scratch and dig
Beam Deviation< 3 arc minutes
Wavefront Distortionλ/4@632.8nm
Damage Threshold> 10 MW/cm²
CoatingSingle Layer MgF2@1064nm
MountBlack Anodized

Glan-Laser polarizer

ParameterValue
Materiala-BBO, Calcite, YVO4
Wavelength Rangea-BBO: 220-3000nm; Calcite: 350-2300nm; YVO4: 500-4000nm
Extinction Ratio<5×10⁻⁶
Surface Quality20/10 scratch and dig
Beam Deviation< 3 arc minutes
Wavefront Distortionλ/4@632.8nm
Damage Threshold>500MW/cm²
CoatingSingle Layer MgF2@1064nm
MountBlack Anodized

Glan-Thompson polarizer

ParameterValue
MaterialCalcite
Wavelength Range400-2300nm
Extinction Ratio<5×10⁻⁶
Surface Quality20/10 scratch and dig
Beam Deviation< 3 arc minutes
Wavefront Distortionλ/4@632.8nm
Damage Threshold> 10MW/cm²
CoatingSingle Layer MgF2@1064nm
MountBlack Anodized Aluminum