Infrared Wedge Prism
Infrared wedge prisms are optical components specifically designed for infrared wavelengths (typically 700 nm to 14 μm). They are widely used in infrared laser systems, thermal imaging and spectral analysis applications. The core lies in material selection and coating optimization to ensure high transmittance, low absorption and thermal shock resistance. How to select the appropriate material for infrared wedge prisms? CO₂ laser applications(10.6 μm): the preferred material is ZnSe(low absorption and high damage threshold). Multispectral compatibility: ZnS (VIS to IR transmission). Ultra-broadband requirements: CaF₂ (UV to MIR). High refractive index needs: Ge or Si ( Ge shows performance degradation at elevated temperatures). Which materials of infrared wedge prisms can Yutai Optics process? ZnSe: Transmission Range: 600 nm - 16 μm; Refractive Index@10um: 2.4; Thermal Expansivity: 7.1×10⁻⁶/℃; Typical Application: CO₂ laser (10.6 μm), thermal imaging ZnS: Transmission Range: 500 nm - 12 μm; Refractive Index@10um: 2.2; Thermal Expansivity: 6.8×10⁻⁶/℃; Typical Application: Multispectral window, missile guidance CaF₂: Transmission Range: 180 nm - 8 μm; Refractive Index@10um: 1.39; Abbe Number: 95.3; Thermal Expansivity: 18.5×10⁻⁶/℃; Typical Application: UV-IR wide band system Si: Transmission Range: 1.2 μm - 7 μm; Refractive Index@10um: 3.4; Thermal Expansivity: 2.6×10⁻⁶/℃; Typical Application: MIR laser, semiconductor detection Ge: Transmission Range: 2 μm - 16 μm; Refractive Index@10um: 4; Thermal Expansivity: 6.1×10⁻⁶/℃; Typical Application: Thermal imaging, infrared night vision
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