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Table 1.
Servo-stabilized interferometer system characteristics.
Fabry-Perot interferometer | |
---|---|
Manufacturer | IC optical systems |
Type | ET50 FS |
Aperture | 50 mm |
Material | Fused silica |
(minimal inhomogeneity) | |
Plate wedge | 20 arcmin |
Cavity spacing | 3.000 mm ± ∼0.005 mm |
Coating | Multilayer broadband |
Wavelength range | 400 nm−700 nm |
Estimated cavity errors | λ/100 (PV @ 632.8 nm, after |
coating, over central 35 mm) | |
Nominal reflectance | 95% ± 3% |
Estimated step (Δ) | ∼0.46 nm |
Tilt control estimated precision (X, Y) | ∼1.4 × 10−3 arcsec |
Controller | |
Manufacturer | IC optical systems |
Type | CS100 |
Digital resolution (N) | 12 bits/4096 steps |
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