ZnSe

Zinc Selenide Lens

Zinc Selenide Lens is a kind of chemically inert material with high purity, strong adaptability and easy processing. It has low optical transmission loss and good transmittance. With low absorption coefficient and high resistance to thermal shock, it is the preferred material for high-power CO2 laser optical elements.

ZnSe lenses are precision optical components commonly used in thermal imaging, high power CO 2 laser systems and life sciences.

Optical Properties of Zinc Selenide

Zinc selenide (ZnSe) is a polycrystalline semiconductor of interest with excellent transmission properties. Specifically, it has a transmission of approximately 70% in the 1-15µm wavelength range and a high transmission in the 600nm to 21µm range.

Manufactured using the chemical vapour deposition (CVD) process, ZnSe optics offer an impressive array of properties:

High purity: Ensures minimal impurities in ZnSe lenses.

High refractive index uniformity: Contributes to the high quality performance of ZnSe lenses.

Chemically Inert: This makes ZnSe particularly stable in a variety of environments.

High Damage Threshold: Allows ZnSe optics to withstand bright light or thermal conditions.

Water-insoluble: Enhances the material's resilience in wet or humid conditions.

Highly resistant to thermal shock: further increases the durability of ZnSe lens products.

Non-hygroscopic: Ensures that ZnSe lenses do not absorb moisture, thus maintaining their integrity.

Low Volume Loss: Characterised by a low zinc selenide absorption coefficient and zinc selenide absorption spectrum, resulting in minimal loss due to absorption and scattering.

All of these properties make ZnSe glass and optics highly sought after for a variety of applications.

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