These products exhibit higher transmission and better damage threshold than calcite polarizers, and do not produce the unwanted beam displacement associated with Brewster-type polarizers.
Standard Specifications
| |
Type 1 |
Type 2 |
Type 3 |
| Polarization transmittance, TP |
> 98.0% |
> 97.5% |
> 97.0% |
| Contrast ratio, TP / TS |
> 500:1 |
> 500:1 |
> 500:1 |
| Damage threshold @ 1064 nm, 20 ns pulse |
500 MW / cm2 |
500 MW / cm2 |
300 MW / cm2 |
| Transmitted wavefront distortion @ 633 nm |
< 1 / 8ë |
< 1 / 8ë |
< 1 / 4ë |
| Transmitted beam deviation |
< 2 arc minutes |
< 3 arc minutes |
< 3 arc minutes |
| Reflected beam deviation |
< 4 arc minutes |
< 4 arc minutes |
< 4 arc minutes |
| Acceptance angle |
+0.5° to -0.5° |
+0.5° to -0.5° |
+0.5° to -0.5° |
| Surface quality, scratch-dig |
20 - 10 |
40 - 15 |
60 - 20 |
| Surface reflectivity |
< 0.15% |
< 0.25% |
< 0.25% |
| Operating temperature range |
-40 °C to +70 °C |
-40 °C to +70 °C |
-40 °C to +70 °C |
| Standard wavelength |
1064 nm |
1064 nm |
1064 nm |
Note: Please contact a Sales Representative if you desire detailed information on Type I Quality Air Spaced Polarizers.
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