The performance of air spaced zero order waveplate is as good as cemented zero order waveplate. Additionally, the air-spaced construction enables it suitable for the high-power laser application. The damage threshold must be considered (about 500MW/cm2) when used.
| ATTRIBUTE | SPECIFICATIONS |
| material | Crystal Quartz |
| DIAMETER TOLERANCE | +0.0, -0.2mm |
| wavelength distortion | λ/8@632.8mm |
| retardation tolerance | λ/500 |
| wavelength range | 240-2100nm |
| parallelism | < 1 arc second (single quartz plate) |
| SURFACE FIGURE: IRREGULARITY(N) | <0.5 fringe |
| SURFACE QUALITY | 20/10 scratch and dig |
| COATING | With AR coating on outside surfaces |
