• Extinction Ratio: 100,000:1
• Fabricated from the Highest Grade Calcite to Achieve a High Damage Threshold
• Air-Spaced Design
• High Damage Thresholds
• Fabricated from Laser-Quality Natural Calcite (Low Scatter)
• Wavefront Distortion: ≤ λ/4 Over Clear Aperture (Excluding Side Ports)
• 20/10 Scratch-Dig Surface Quality on Input and Exit Faces (80/50 on Side Ports)
• V Coated for 1.06 µm

This Thorlabs Glan-Laser Calcite Polarizer is specifically designed to deal with high-energy laser light. This polarizer is manufactured from only select portions of the calcite crystal that must pass a laser scattering sensitivity test. Like Glan-Taylor Prisms, this prism is ideal for applications requiring extremely high polarization purity (100,000:1), high damage threshold, and a broad wavelength range (350 nm - 2.3 µm). Two polished side exit ports are provided to allow bidirectional use of the prism polarizer. The side ports also ensure that the rejected light from high power lasers can safely exit the polarizer.

This Glan-Laser Polarizer is designed to work with well-collimated light beams. Divergent beams will produce multiple output beams. The input and output faces are polished to a laser quality 20-10 scratch-dig surface finish to minimize scattering of the transmitted P polarization component of the laser beam or light field. The S polarization component is reflected through a 68° angle and exits the polarizer through one of the two side ports, which are pad polished.

• Extinction Ratio: 100,000:1
• Material: Laser Quality Natural Calcite (low scatter)
• Design: High Laser Damage Threshold Air-Spaced Design
• Damage Threshold: 15 J/cm² (1064 nm, 10 ns, 10 Hz, Ø0.433 mm)
• Wavefront Distortion: ≤ λ/4 Over Clear Aperture
• Transmission Range: 0.35 - 2.3 µm
• Surface Quality (Input and Output Faces): 20/10 Scratch/Dig
• Surface Quality (Side Ports): 80/50 Scratch/Dig
• Aperture: 5 mm x 5 mm
• Prism Dimensions (W x L): 6.5 mm x 7.5 mm
• Reflectivity (Avg.): <0.25%