PBS Polarizing Beamsplitters
- Polarizing beamsplitters consist of two right angle prisms. One of them is coated with dielectric multilayer polarizing coating on the hypotenuse face.
- Polarizing beamsplitters split monochromatic beam entering at zero degree into p-polarization as transmitted and s-polarization as reflected.
- Four surfaces of the cube are coated with narrowband multilayer antireflection coatings.
- The losses of input beam of these products are minimized because of no absorption of dielectric coating.
- For cube beamsplitters, unlike plate beamsplitters, beam deviations of transmitted beams and ghosts rarely occur.
Point
- Input a beam from the surface of the prism that is marked with ○.
Attention
- The transmittance curves are based on actual measurements and might be different with manufacturing lots.
- The surface flatness is the reflected wavefront distortion of the surface before coating.
- Be sure to wear laser safety goggles when checking optical path and adjusting optical axis.
| Material | BK7 |
|---|---|
| Surface flatness | λ/4 |
| Beam deviation | ≤10 arcmin |
| Coating | Hypotenuse Surface: Dielectric Multilayer Polarizing Coating(effective area:80%) Four Surfaces: Narrowband Multilayer Antireflection Coating |
| Angle of incidence | 0° |
| Surface quality | 40 - 20 |
| Extinction Ratio | 1/400(S-polarization) Ts/ (Ts＋Rs) (Except for 405nm) |
| Transmittance | >= 97% (P-polarization(Except for 405nm) Tp ≥ 90% Ts ≤ 1%(405nm) |
