Features
- Extinction Ratio: 100,000:1
- Fabricated from the Highest-Grade, Laser-Quality a-BBO
- Coating: 210 - 450 nm (centered at 266 nm), Ravg <1.5%
- High Damage Threshold: 5 J/cm2 (10 ns pulse, 10 Hz, Ø0.347 mm Spot Size, @ 355 nm)
- Low Scatter
- Wavefront Distortion: ≤ λ/8 Over Clear Aperture (Excluding Side Ports)
- Surface Quality: 20/10 Scratch-Dig on Input and Exit Faces; 40/20 Scratch-Dig on Side Ports
- Air-Spaced Design
This Thorlabs Glan-Laser a-BBO Polarizer is specifically designed to deal with high-energy, short-wavelength laser light. Like the Glan-Taylor and Glan-Laser Calcite Polarizers, this polarizer is ideal for applications requiring extremely high polarization purity (100,000:1), high damage threshold (5 J/cm2, 10 ns pulse, 10 Hz, 0.347 mm Spot Size, @ 355 nm), and transmisison in the UV (210 - 450 nm). Two polished side exit ports are provided to allow bidirectional use of the prism polarizer. These side ports also ensure that the rejected light from high-power lasers can safely exit the polarizer. The Glan-Laser Polarizer is designed to work with well collimated light beams. Divergent beams will produce multiple output beams.
This polarizer has a single-layer MgF2 antireflection coating (SLAR-MgF2). The SLAR coating features good broadband UV performance with low reflectance (<1.5%) from 210 to 450 nm. 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 at a 61° angle and exits the polarizer through one of the two side ports.
Specifications
- Extinction Ratio: 100,000:1
- Material: Laser Quality a-BBO (Low Scatter)
- Design: High Laser Damage Threshold Air-Spaced Design
- Transmission Range: 210 - 450 nm
- Damage Threshold: 5 J/cm2 (10 Hz, Ø0.347 mm Spot Size, 10 ns Pulses @ 355 nm)
- Wavefront Distortion: ≤ λ/8 Over Clear Aperture
- Surface Quality (Input and Output Faces): 20/10 Scratch/Dig
- Surface Quality (Side Ports): 40/20 Scratch/Dig
- Aperture: 5 mm x 5 mm
- Prism Dimensions (W x L): 6.5 mm x 7.5 mm
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