| Material Specifications | ZnSe ,ZnS | Ge,Si,CaF2, MgF2,AMTIR | Fused Silica, Zerodur | Sapphire |
| Diameter | up to Φ300mm | up to Φ300mm | up to Φ350mm | up to Φ300mm |
| PV | PV≤0.1λ @ 632.8nm | PV≤0.1λ @ 632.8nm | PV≤0.1λ @ 632.8nm | PV≤0.15λ @ 632.8nm |
| rms | rms≤0.02λ @ 632.8nm | rms≤0.02λ @ 632.8nm | rms≤0.02λ @ 632.8nm | rms≤0.03λ @ 632.8nm |
| Roughness | ≤0.2nm | ≤0.2nm | ≤0.1nm | ≤0.5nm |
Roughness of Super-polished Surface Measured by Atom Force Microscope (AFM)
(Fused Silica Substrate with Diameter 200mm, Ra=0.28nm)
Flatness of Super Polished Surface Measure by Zygo Interference Instrument
(Fused Silic Substrate of Diameter 300mm, PV=0.101 Wave @633nm)
Super polished substrates or mirrors are necessary for some demanding applications like DUV (deep ultraviolet) lasers, ultra-high power laser systems and ring laser gyroscopes. Shalom EO offers the super-polished mirrors or substrates, with extra high flatness, roughness and surface quality, a variety of substrate materials are available for customer's selection.
Applications:
