Polarizing cubes
Main features
- Optically contacted or epoxy glued configurations available
- Minor transmitted beam deviation (<3 arcmin)
- Anti-reflective coated input and output faces
Application examples
- Beam separation and combining by polarization
- Polarization separation
- Description
- Curves
- Specifications
4Lasers unmounted polarizing cubes are fabricated from two identical right-angle prisms with their hypotenuse faces adhered together via optical contact or epoxy glue. Polarized cubes are designed to transmit p-polarized light with minor deviation (<3 arcmin) and deflect s-polarized light by 90° angle. Prior to cementing polarizing dielectric thin-film coating is applied onto one of the prisms hypotenuse faces, while input and exit surfaces are anti-reflective coated for a particular wavelength range. 4Lasers optically contacted polarizing cubes provide a higher laser-induced damage threshold, therefore are primarily used for high-power applications, while epoxy glued cubes are a cost-effective choice for low and mid-power applications. We recommend using these elements with collimated laser beams in order to avoid beam aberrations.
| Polarizing cubes | |
|---|---|
| Beam deviation | <3 arcmin |
| Clear aperture | >85% |
| Dimensions tolerance | +0,0/-0,2 mm |
| Thickness tolerance | ±0,25 mm |
| Protective chamfers | <0,35 mm at 45° |
| Coatings | Hypotenuse face: polarization beam splitting coating Input and output faces: antireflective coatings |
| Surface quality | 40-20 S-D |
| Surface flatness | <λ/4@632,8 nm |
| Laser-induced damage threshold | >15 J/cm2@1064 nm, 10 ns (for 1025-1080 nm optically contacted cubes) >0,1 J/cm2@532 nm, 10 ns (for 400-700 nm epoxy glued cubes) |
| Mount | Unmounted, available upon request |
