ZnSe Optical Glass | CVD Zinc Selenide IR Optical Substrate

ZnSe Optical Glass | CVD Zinc Selenide IR Optical Substrate

Summary

High purity CVD ZnSe (Zinc Selenide) optical substrate, available in IR grade & laser grade. Broadband IR transmission, custom windows, domes, lenses, AR coating, 24h RFQ.

ZnSe Optical Glass | CVD Zinc Selenide IR Optical Substrate

ZnSe Optical Glass Manufacturer

CVD Zinc Selenide Broadband Infrared Optical Substrate

Felix Glass supplies high-purity CVD ZnSe (Zinc Selenide) optical glass substrates, offered in two distinct grades: IR imaging grade and laser grade. ZnSe features wide infrared transmission from visible to 16μm, making it a core material for CO₂ laser systems and long-wave thermal imaging. We provide custom blanks, windows, domes, lens substrates with precision polishing and anti-reflection coatings.

 Felix Glass CVD ZnSe optical glass substrate, IR grade and laser grade zinc selenide for infrared and CO2 laser optics

ZnSe Optical Glass | CVD Zinc Selenide
IR Grade / Laser Grade | Broadband IR Substrate

Material & Grade Overview

CVD ZnSe is chemical vapor deposited zinc selenide, the most common broadband infrared substrate. Material name ≠ performance grade. IR grade ZnSe is optimized for uniform transmission for thermal imaging, while laser grade ZnSe is controlled for ultra-low bulk absorption for continuous high-power 10.6μm CO₂ laser. Mixing grades will lead to laser thermal runaway or imaging defects.

Key Specifications & Custom Options

Material CVD ZnSe (Zinc Selenide)
Transmission Range 0.6 μm ~ 16 μm
Available Grades IR Imaging Grade, Laser Grade
Knoop Hardness 110 Knoop
Surface Quality 20‑10 / 40‑20 scratch‑dig
Coating Choices BBAR, 10.6μm Laser AR, protective coating
Available Forms Blank, window, dome, lens substrate, custom shape
Inspection FTIR transmission, interferometer, inclusion screening, COA available

Manufacturing & Inspection Evidence

ZYGO interferometer inspection for CVD ZnSe substrate

Interferometer Inspection

Precision polishing of ZnSe optical glass

Precision Polishing

CVD ZnSe blanks and finished optical components

ZnSe Optical Substrate

We separate laser-grade and IR-grade ZnSe production and inspection batches strictly, to prevent wrong-grade delivery for laser or thermal imaging projects.

Typical Application

  • 10.6μm CO₂ laser marking, cutting, engraving optics
  • LWIR thermal imaging, EO/IR gimbal, surveillance sensors
  • Infrared spectroscopy, optical gas detection instruments
  • Custom infrared domes, protective windows and lens blanks

Coating Selection Guide

BBAR coating is widely used for broadband IR imaging. 10.6μm laser AR coating is mandatory for high-power CO₂ laser optics. Ordinary IR AR coating cannot replace laser-grade low-absorption coating. Learn more about optical coating technology.

Order & Quotation Requirements (Valid RFQ Checklist)

To generate an accurate quotation within 24 hours, please prepare below information:

  • 2D/3D engineering drawing (PDF / STEP / IGES)
  • Grade selection: IR imaging grade or laser grade
  • Dimension, clear aperture, surface quality & surface figure
  • Coating requirement and working wavelength
  • Quantity: prototype / pilot batch / mass production
Send Drawing For Quote

FAQ Snippets

What is the difference between IR grade ZnSe and laser grade ZnSe?

Laser grade ZnSe is controlled for ultra-low bulk absorption for CO₂ laser. IR grade ZnSe prioritizes uniform transmission for thermal imaging, not suitable for continuous high-power laser.

Is ZnSe fragile for outdoor use?

ZnSe is relatively soft. DLC protective coating can improve scratch and moisture resistance for outdoor gimbal and dome applications.

Can you supply unpolished ZnSe blanks?

Yes, raw CVD ZnSe blanks, semi-finished substrates and fully polished coated components are all available.

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