Phase-Retarding Mirror
The CO2 phase-retarding mirror is a specialized polarization-control optic developed for 10.6μm CO2 infrared laser systems, with 9.3μm optional. A high-precision multilayer phase-coating design provides accurate polarization control and high-power reflection, combining mirror and phase-retarder functions. Two main types are available: zero-phase-retardation mirrors (ZPR), which maintain incident polarization, and 1/4-wave phase-retarding mirrors (PRR-90°), which convert linear polarization to circular polarization. They address nonuniform processing and beam distortion caused by CO2 laser polarization dependence and are core components for high-power CO2 laser cutting, welding and precision optical experiments.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Applicable wavelength | 10.6 μm mainstream, 9.3 μm, and broad band 10.2–10.6 μm |
| Phase Retardation Type | Zero phase (0°±2°), 1/4 phase (90°±2°), and 45° / 60° / 120° options. |
| Reflectance [@10.6 μm] | ≥99%（ Standard ） |
| Absorptance [@10.6 μm] | ≤0.2% |
| Angle of Incidence (AOI) | 45°（ Standard ） |
| Clear Aperture | 12.7 mm、19.1 mm、25.4 mm、38.1 mm |
| Substrate material | Single-Crystal Silicon (Si), Oxygen-Free Copper (Cu) |
| Surface Quality | 40-20 S/D |
Applications
Datasheet
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Supplier Information
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