Vacuum UV Spectroscopy
VUV Plane Mirrors
Specifications and Control
| - | Ultimate Specification | Standard Specification | Control |
|---|---|---|---|
| Dimension | Up to 250 mm length | - | - |
| Radius of Curvature | Superior at few tens of Km | Superior at few tens of Km | LTP measurements |
| Slope error | Down to 0.1 arcsec rms | 0.2 arcsec rms | LTP measurement Interferometer |
| Microroughness | Down to 2 Å rms | 5 Å rms | Micromap measurements |
| Substrate | Silicon Zerodur Fused Silica SiC CVD | - | - |
| Coating | Au Pt AlMgF Ni | Cr binding layer | Quartz monitoring |
Examples of Typical Spherical Mirrors
| Size mm | Optical surface mm | Radiuses of Curvature | Slope Error arcsec rms | Max Micro roughness Å rms | Coating | Substrate |
|---|---|---|---|---|---|---|
| 200x50x30 | 190x45 | JY calibrated samples | 0.2 arcsec rms | 5 | Au or Pt | Silicon Zerodur Fused Silica |
| 100x30x20 | 95x25 | JY calibrated samples | 0.2 arcsec rms | 5 | Au or Pt | Silicon Zerodur Fused Silica |
| 75x15x15 | 70x10 | JY calibrated samples | 0.1 arcsec rms | 5 | Au or Pt | Silicon Zerodur Fused Silica |