Description
Product Specification:
| Birefringent Material | Polymer, sandwiched between BK-7 substrates |
| Recommended Wavelength Range | λ/4, over near infrared region from 700 – 1100nm |
| Surface Quality | 40-20 Scratch-Dig |
| Substrates | BK-7, grade-A, fine annealed |
| AR Coating | R ≤ 0.65% loss per surface (normal incidence) average, BBAR 700-1100nm wavelength range |
| Size | 25.4mm outer diameter, 80% clear aperture (20mm) |
| Acceptance Angle | ± 15 degrees |
| Unit Thickness | 4.55mm +/- .20mm |
| Optic Axis Stability | ≤ 2 degree |
| Wavefront Distortion | λ/4 @ 632.8nm |
| Temperature Range | 20° C to 40° C |
| Wedge | ≤ 2 minutes |
| Damage Threshold | CW: 500 Watt/cm2 Vis Pulsed: .3 J/cm2 10 nsec pulses @ 532nm |
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