Vacuum UV Spectroscopy
VUV Toroidal Mirrors
Specifications and Control
| - | Ultimate Specification | Standard Specification | Control |
|---|---|---|---|
| Dimension | Up to 500 mm length | - | - |
| Radius of Curvature | Down to 0.01% | 0.5% | Calibrated Samples |
| Slope error | Down to 0.5 arcsec rms longitudinal 1 arcsec rms transverse | 1 arcsec rms longitudinal 5 arcsec rms transverse | Visual interferometric comparison to calibrated sample |
| 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 Toroidal Mirrors
| Size mm | Optical surface mm | Radiuses of Curvature | Slope Error arcsec rms | Max Micro roughness Å rms | Coating | Substrate |
|---|---|---|---|---|---|---|
| 500x60x60 | 490x50 | JY calibrated samples | 1 arcsec rms longitudinal 5 arcsec rms transverse | 5 | Au or Pt | Silicon Zerodur Fused Silica |
| 300x50x40 | 292x42 | JY calibrated samples | 1 arcsec rms longitudinal 5 arcsec rms transverse | 5 | Au or Pt | Silicon Zerodur Fused Silica |
| 150x30x30 | 142x22 | JY calibrated samples | 1 arcsec rms longitudinal 5 arcsec rms transverse | 5 | Au or Pt | Silicon Zerodur Fused Silica |
| 75x15x15 | 70x10 | JY calibrated samples | 1 arcsec rms longitudinal 5 arcsec rms transverse | 5 | Au or Pt | Silicon Zerodur Fused Silica |