Cube Half Mirror
| Product Type | NPCH | HBCH | CSCH | CSMH |
|---|---|---|---|---|
| Product Name | Non-polarizing Cube Half Mirror | Hybrid Cube Half Mirror | Chromium Cube Half Mirror | Dielectric Cube Half Mirror |
| Material | BK7 Synthetic fused silica | BK7 | BK7 | BK7 |
| Surface Flatness of Substrate | λ/4 | λ/4 | λ/4 | λ/4 |
| Beam Deviation | ＜5′ | ＜5′ | ＜5′ | ＜5′ |
| Coating | Hypotenuse surface; Dielectric multilayer coating Four surfaces; Multilayer antireflection coating |
Hypotenuse surface; Hybrid coating (dielectric and metallic multilayer coating) Four surfaces; Multilayer antireflection coating |
Hypotenuse surface; Chromium Four surfaces; Multilayer antireflection coating |
Hypotenuse surface; Dielectric multilayer coating Four surfaces; Multilayer antireflection coating |
| Incident Angle | 0° | 0° | 0° | 0° |
| Transmittance | - | - | 28±5％ (average with respect to wavelength) |
- |
| Divergence Ratio (reflectance : transmittance) |
1:1 | 1:1 | 1:1 | 1:1 |
| Polarization Condition of Incident Beam | - | - | - | Unpolarized light or 45-degrees Linear polarization or Circular polarization |
| Laser Damage Threshold | 0.3J/cm2 Laser pulse width: 10ns, repetition frequency 20Hz |
0.3J/cm2 Laser pulse width: 10ns, repetition frequency 20Hz |
0.3J/cm2 Laser pulse width: 10ns, repetition frequency 20Hz |
0.3J/cm2 Laser pulse width: 10ns, repetition frequency 20Hz |
| Surface Quality (Scratch-Dig) | 20 － 10 | 40 － 20 | 40 － 20 | 20 － 10 |
| Clear Aperture | Circle that inscribed in a square of 85% of the dimensions (Circle inscribed in a square of 80% of the dimensions, in case of 5 and 7mm) | Circle that inscribed in a square of 85% of the dimensions | Circle that inscribed in a square of 85% of the dimensions | Circle that inscribed in a square of 85% of the dimensions (Circle inscribed in a square of 80% of the dimensions, in case of 5 and 7mm) |
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