Laser Grade CVD ZnSe: Material, Differences & Optical Specifications
What Is Laser Grade CVD ZnSe?
Laser grade CVD ZnSe is high-purity chemical vapor deposited zinc selenide, engineered specifically for high-power CO₂ laser systems at 10.6 μm. Unlike IR imaging grade ZnSe, the laser variant is controlled for extremely low bulk absorption, preventing thermal runaway under continuous laser irradiation. Hong Kong Felix Optical Glass Co., Limited supplies laser grade ZnSe domes, flat windows and plano-convex lenses with full material certification.
Laser Grade ZnSe vs IR Grade ZnSe: Critical Differences
| Property | Laser Grade CVD ZnSe | IR Imaging Grade CVD ZnSe |
|---|---|---|
| Core target | High power CO₂ laser transmission | Thermal imaging, low power IR optics |
| 10.6μm absorption | Ultra-low absorption | Higher acceptable absorption |
| Primary metric | LIDT laser damage threshold | Broadband IR transmittance |
| Typical parts | Laser output window, focusing lens, rangefinder dome | Thermal camera dome & window |
Key Material Performance Parameters for Laser ZnSe
- Working wavelength: 10.6 μm CO₂ laser, 0.6–16 μm broadband IR transmission
- Surface quality: 40-20 scratch and dig for laser optical assemblies
- Surface figure: λ/4 @632.8nm standard polishing
- Low impurity content, strict batch testing for absorption coefficient
- High laser-induced damage threshold for continuous-wave CO₂ lasers
Common Component Types for Laser Grade CVD ZnSe
We manufacture multiple optical forms from laser grade CVD ZnSe. Visit our laser ZnSe product page to view dome, window and lens samples.
- Hemispherical ZnSe dome: Laser rangefinder front protective optical window
- Flanged ZnSe dome: Mount-ready design for integration into laser sensor housings
- Flat thick ZnSe window: Output window for CO₂ laser cutting and engraving machines
- Plano-convex ZnSe lens: Focusing optics for industrial CO₂ laser beams
Anti-Reflection & DLC Hard Coatings for Laser ZnSe
AR coatings tuned for 10.6μm reduce surface reflection losses and improve system efficiency. DLC diamond-like carbon coating adds scratch and moisture resistance for factory environments. All coating processes can be customized according to your laser power rating and environmental requirements. Coatings must be matched to laser power to avoid coating burn or degradation.
Design & Tolerance Considerations During Customization
When specifying custom laser grade ZnSe optics, provide these data: outer diameter, thickness, curvature radius, edge machining requirements, wavelength, coating type, quantity and laser power level. Our optical engineers review drawings and provide feasibility feedback before production. Prototype samples are available for pre-production validation.
Main Industrial Applications
- High-power CO₂ laser cutting, marking and engraving equipment
- Laser rangefinder and LiDAR optical front-end assemblies
- IR laser spectroscopy and measurement instruments
- Medical CO₂ laser delivery optics
Inspection & Quality Assurance
Every laser grade CVD ZnSe component undergoes optical testing including transmission measurement, surface defect inspection and dimensional metrology. Material certificates are supplied with batches to prove low absorption and raw material grade. Laser grade stock is stored and processed separately from IR imaging grade material to prevent cross-contamination.
Get Your Custom Laser ZnSe Quotation
Send your drawings or dimension sketches, wavelength, coating requirements and quantity to request a formal quote. We support small prototype orders and mass production for OEM industrial laser manufacturers.
FAQ: Laser Grade CVD ZnSe Optics Selection
1. Can laser grade ZnSe be used for thermal imaging cameras?
Technically it transmits IR, but it is over-specified and higher cost. IR-grade ZnSe is the cost-effective choice for thermal cameras. Check IR grade infrared domes.
2. What is LIDT for laser grade CVD ZnSe?
Laser induced damage threshold is tested at 10.6μm CW CO₂ laser. Contact our team for detailed test data sheet matching your power condition.
3. Is prototype sample available?
Yes, small prototype orders are accepted, typical lead time 7 working days after specification confirmation.
