| Material | Single crystal quartz |
| Optical axis | normal to facet on circumference of retarder |
| Wavefront distortion | λ/10@633 nm |
| Surface quality | 20-10 scratch & dig (MIL-PRF-13830B) |
| Parallelism | <10 arcsec |
| AR coating | R<0.5% |
| Laser Damage Threshold | >10J/cm2, 10 nsec pulse, 1064nm typical |
| EKSMA Optics Zero Order Air-Spaced Waveplates
137.21 kB |
This Zero Order Air-Spaced Plate, made of single crystal quartz.