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Due to its wide transmission band and low absorption in the red portion of the visible spectrum, Zinc Selenide (ZnSe) is commonly used in optical systems that combine CO2 lasers, operating at 10.6 μm, with inexpensive HeNe alignment lasers. Zinc selenide is transparent from 600 nm - 16 μm and is ideal for IR applications. It is also commonly used in thermal imaging systems. ZnSe also transmits some visible light, unlike germanium and silicon, thereby allowing for visual optical alignment. However, it is quite soft and will scratch easily. ZnSe has an index of refraction of 2.403 at 10.6 μm.
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Due to its wide transmission band and low absorption in the red portion of the visible spectrum, Zinc Selenide (ZnSe) is commonly used in optical systems that combine CO2 lasers, operating at 10.6 μm, with inexpensive HeNe alignment lasers. Zinc selenide is transparent from 600 nm - 16 μm and is ideal for IR applications. It is also commonly used in thermal imaging systems. ZnSe also transmits some visible light, unlike germanium and silicon, thereby allowing for visual optical alignment. However, it is quite soft and will scratch easily. ZnSe has an index of refraction of 2.403 at 10.6 μm.



Zinc Selenide Specification or based on clients' requirements


1.Material

Zinc Selenide

2.Dimensional tolerances

0/-0.05mm

3.Surface flatness

人/4@633nm，per 25.4mm diameter

4.Clear aperture

＞90%

5.Centration

1分

6.Surface quality

Infrared 40-20

7.Edge Chip

＜0.1mm

8.Bevel

Based on clients' requests

9.Coating

Apply Infrared AR coating or based on client requests