Custom High Transmission Infrared CVD Zinc Selenide ZnSe Window for IR Imaging & Spectroscopy

Name: Custom High Transmission Infrared CVD Zinc Selenide ZnSe Window for IR Imaging & Spectroscopy
Brand: Henan UM Optics Ltd
Availability: InStock

Description

Zinc Selenide (ZnSe) Windows are high-performance infrared optical components fabricated from high-purity ZnSe material. With an extremely broad transmission range covering visible to far-infrared regions, low absorption coefficient, and high laser damage threshold, ZnSe windows are widely used in high-power CO₂ laser systems, FTIR spectrometers, thermal imaging, medical laser devices, and industrial infrared detection. They feature superior optical homogeneity, low scatter, and stable physical and chemical properties, making them the preferred choice for demanding infrared optical systems.

Specifications

Substrate Material:	ZnSe
Antireflection Coating:	Coated
Diameter:	20 mm
Surface Quality:	60-40 scratch-dig
Surface Flatness:	lambda/6
Thickness:	1 mm

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Features

Ultra-broad spectral transmission: 0.5 μm to 20 μm, covering VIS, NIR, MWIR, LWIR and far-infrared bands
Extremely low absorption coefficient: Especially suitable for high-power CO₂ laser systems
High laser-induced damage threshold (LIDT): Excellent resistance to 10.6 μm laser radiation
Outstanding optical homogeneity: Low scatter, low wavefront distortion, ideal for precision optical systems
Good mechanical properties: Moderate hardness, easy to polish and process into various sizes
Stable chemical properties: Insensitive to moisture, non-hygroscopic, suitable for harsh industrial environments

Applications

High-power CO₂ laser systems: Laser output windows, protective windows for cutting and welding machines
FTIR and infrared spectroscopy: High-transmission windows for laboratory and industrial spectrometers
Medical laser equipment: Dermatology lasers, surgical laser delivery systems
Thermal imaging systems: LWIR windows for security, surveillance and thermal cameras
Infrared gas detection: Industrial emission monitoring, gas analysis and environmental monitoring
Aerospace and defense: Infrared optical windows for airborne and vehicle-mounted systems
Industrial process monitoring: Non-contact temperature measurement and infrared optical paths

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Frequently Asked Questions

Is ZnSe suitable for high-power CO₂ lasers?

Yes, ZnSe is the most widely used material for 10.6 μm CO₂ laser windows due to low absorption and high LIDT.

What are the key differences between Zinc Selenide (ZnSe) and Zinc Sulfide (ZnS)?

ZnSe features lower absorption and higher transmittance in the mid-to-far infrared region, making it ideal for high-power CO₂ laser systems. ZnS exhibits higher hardness and better mechanical durability, with transmission extending into the ultraviolet band. ZnSe also offers superior optical homogeneity and lower scatter for precision infrared applications.

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