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Polarization Beamsplitter Cubes
Polarization Beamsplitter Cubes
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Beamsplitters are used to split or combine beam of light. The most common types provided by Tensun is plates and cubes. Plates are used for most laser applications as they exhibit low absorption. Cubes are a convenient, protected form for low power applications. The performance of beamsplitters are mainly dependent on the coating specifiications.
Beamsplitters cubes:
Beamsplitters plate:
| Material | BK7, SF |
| Dimension Tolerance | ±0.2mm |
| Thickness Tolerance | ±0.2mm |
| Extinction Ratio | >100:1 for broadband, >500:1 for narrow band |
| Surface Quality | 60/40 scratch and dig |
| Surface Flatness | λ/4 @632.8nm |
| Beam Deviation | 3 arc minute |
| Principal Transmittance | Narrow: Tp>95%, Ts<1% Broadband: Tp>90%, Ts<1% |
| Principal Reflectance | Narrow: Rs>99%, Rp<5% Broadband: Rs>99%, Rp<10% |
| Coating | Polarization beamsplitter coating on hypotenuse face AR or BBAR coating on all input and output faces |
Note: Custom sizes and wavelength are available upon request.