
Laser Line Polarizing Beamsplitter Cubes MPBS24-405
MPBS24-405Design Tools
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Laser Line PBS — Model MPBS24-405
UV Fused Silica, optimized for 405 nm, cube size 25.4 mm×25.4 mm×25.4 mm, extinction ratio >3000:1.
Overview
LBTEK mounts the 25.4 mm laser line polarizing beamsplitter cube 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°± 5 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 | 405 nm |
| Coating | AR coating + beamsplitter film |
| 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°± 5 arcmin; |






