Zinc selenide (ZnSe) materials exhibit excellent light transmittance across a broad wavelength range (0.5μm to 22μm). They are commonly used as substrate materials for mirrors and beam splitters in high-power CO₂ laser systems. Additionally, their superior refractive index uniformity and consistency make them ideal for applications such as windows and lenses in thermal imaging systems, medical devices, industrial thermal radiation meters, and infrared spectrometers.
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