
Laser Line Polarizing Beamsplitter Cubes MPBS24-850
MPBS24-850Design Tools
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Laser Line Polarizing Beamsplitter Cubes — Model MPBS24-850
UV Fused Silica, optimized for 850 nm, cube size 25.4 mm×25.4 mm×25.4 mm, extinction ratio >3000:1.
Overview
The 25.4 mm laser line polarizing beamsplitter cube is mounted inside a cubic housing compatible with 30 mm cage systems. A scribe line on the top face marks the beam direction. M3 threaded holes on the side allow compatibility with 30 mm cage systems, and four SM1 internal-thread ports accept 25.4 mm lens tubes. M4 threaded holes at the base support post mounting.
Key Features
- Extinction ratio (Tp:Ts) >3000:1
- Optical coatings: AR coating + beamsplitter film
- Transmitted wavefront error: λ/4
- Surface quality: 20/10
- Beam deviation: Transmission: 0°±5 arcmin; Reflection: 90°±10 arcmin
- Substrate: UV Fused Silica
Applications
- Laser polarization control and beam separation
- Interferometry and polarimetry setups
- Optical isolators and magneto-optic modulators
- Polarization-sensitive imaging and spectroscopy
- High-contrast laser systems requiring stable extinction
| Optical component material | UV Fused Silica |
| Size | 25.4 mm×25.4 mm×25.4 mm |
| Dimensional tolerance | +0.0/-0.2 mm |
| Clear Aperture | 80% CA |
| Operating Wavelength | 850 nm |
| Coating | AR Coating, Beamsplitter Coating |
| Extinction ratio (Tp:Ts) | >3000:1 |
| Surface finish (scratches/pits) | 20/10 |
| Transmitted Wavefront Error (TWE) (@633 nm) | λ/4 |
| Surface Flatness (@633 nm) | λ/4 |
| Exit angle | Transmission: 0°±5 arcmin; Reflection: 90°±10 arcmin |
| Mechanical housing dimensions | 42.0 mm (L) x 42.0 mm (W) x 42.2 mm (H) |






