Frequently Asked Questions

CVD (Chemical Vapor Deposition) ZnSe is a high-purity form of Zinc Selenide produced through a controlled vapor deposition process. It offers several advantages for infrared optics:

• Excellent transmission from 0.5-20μm wavelength range
• Low absorption coefficient (<0.0005 cm⁻¹ at 10.6μm)
• Homogeneous material properties throughout
• Minimal scattering and inclusion-free

These properties make CVD ZnSe the material of choice for CO2 laser optics and thermal imaging systems.

Lead times vary based on complexity and quantity:

• Standard products: 2-4 weeks
• Custom dimensions: 4-6 weeks
• Complex custom optics: 6-8 weeks
• Expedited service: Available for urgent requirements

Contact our sales team for specific lead time estimates for your project.

Our standard and custom surface quality specifications:

• Standard: 40-20 scratch-dig
• Precision: 20-10 scratch-dig
• Ultra-precision: 10-5 scratch-dig (upon request)

Surface flatness typically achieves λ/10 @ 10.6μm, with λ/20 available for critical applications.

Yes, we provide comprehensive documentation with every shipment:

• Material certificates with absorption measurements
• Dimensional inspection reports
• Surface quality verification
• Coating certifications (when applicable)
• Full traceability to raw material lots

We offer a range of optical coatings:

• AR/AR coatings: Optimized for 10.6μm (CO2 laser)
• Broadband AR: Multi-wavelength applications
• Protective coatings: For harsh environments
• Custom coatings: Designed for your specific wavelength

All coatings are applied in our in-house coating facility with full environmental testing.

We have flexible ordering options:

• Standard products: No minimum order quantity
• Custom optics: Prototype quantities (1 piece) accepted
• Volume discounts: Available for larger orders

Whether you need a single prototype or production quantities, we can accommodate your needs.

Yes, we ship worldwide:

• Major carriers: FedEx, UPS, DHL
• Full export documentation included
• ITAR-compliant shipping for defense applications
• Typical transit: 3-7 business days to most locations

We serve a wide range of industries:

• Aerospace: Satellite sensors, aviation systems
• Defense: FLIR, targeting systems, surveillance
• Medical: CO2 laser surgery, diagnostic equipment
• Industrial: Laser cutting, welding, marking
• Research: Universities, national labs