Broadband Polarizing Beamsplitter Cube PBS25-3M
JCOPTIX broadband polarizing beamsplitter cubes comprise two cemented right-angle prisms, with a wavelength-specific beamsplitting coating on one hypotenuse. Incident light splits into orthogonal linear polarizations: p transmits and s reflects. Antireflection coatings on all cube surfaces minimize reflection loss over the operating band. A clearly visible dot marks the coated prism. The source instructs that incident light enter through the coated hypotenuse to minimize power passing through the cement. Otherwise, entering through the uncoated prism produces more than three times the fluence in the cement, comprising the transmitted component and a double pass of the reflected component. Higher power may degrade the cement. JCOPTIX offers six cube sizes and versions premounted in 30 mm cage cube mounts. Contact technical support for other wavelengths or dimensions.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Optical element material | N-SF1 |
| Dimensions | 25.4 mm × 25.4 mm × 25.4 mm |
| Clear Aperture Dimension | >80% of Dimension |
| Operating Wavelength | 900-1300 nm |
| Extinction ratio (Tp:Ts) | >1,000:1 |
| Coating | Antireflection coating, beamsplitter coating |
| Antireflection Coating R_avg [900-1300 nm] | R_avg< 0.5% @ 900-1300 nm |
| Beamsplitter coating Tp / Rs | Tp >90%，Rs >99.5% |
| Exit Angle [Transmission / reflection] | Transmission: 0°±5 arcmin; Reflection: 90°±5 arcmin |
| Damage Threshold [810 nm, 10 ns, 10 Hz] | 3 J/cm² at 810 nm, 10 ns, 10 Hz |
| Dimensional Tolerance | +0/-0.2 mm |
| Transmitted wavefront error [@633 nm] | < λ/4 |
| Surface Flatness [@633 nm] | λ/4 |
| Surface quality (scratch/dig) | 40/20 |
| Mechanical housing dimensions | 41 mm × 41 mm × 41 mm |
Key Features
Datasheet
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Supplier Information
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