Zinc Selenide optical windows have wide variety of usage in high power CO2 laser systems because of its low absorption coefficient and high resistance to thermal shock. It is an excellent choice for any IR applications due to its broad wavelength range (6 µm to 16 µm). Zinc selienide is a chemically vapor diposited material commonly used in thermal imaging and medical systems. Zinc selenide (ZnSe) has a high index of refraction which normally requires an anti-reflection coating to achieve high transmission. Zinc selenide is relatively soft with low scratch resistance thus not recommended for use in harsh enviornment. Extra caution is required during cleaning, handling, and mounting. Zinc selenide is the best choice for optics used in high power CO2 laser systems, thanks to its low absorption coefficient and high resistance to thermal shock.
