Custom AR‑Coated Sapphire Laser Window
Felix Glass manufactures high‑precision sapphire laser windows for high‑power fiber laser cutting, welding and industrial laser systems. Custom diameter, thickness and anti‑reflection coating per your laser operating wavelength.
"We sourced sapphire laser windows from Felix Glass for our 6kW fiber laser prototypes, consistent surface quality and on‑time sampling." — Laser System Integrator, North America
What Is Sapphire Laser Window
Sapphire laser window is a monocrystalline sapphire optical protective plate, double‑side polished, available with AR anti‑reflection coating. It serves as protective barrier for laser resonators, fiber laser cutting heads and welding equipment, resisting high‑energy laser irradiation, thermal shock and mechanical abrasion.
Key Advantages of Sapphire Laser Optics
- High laser‑induced damage threshold for high‑power industrial laser
- Excellent thermal shock resistance, stable under rapid temperature change
- Hard monocrystalline sapphire substrate, scratch‑resistant surface
- Custom AR coating: 1064 nm, 355 nm, 532 nm and other target wavelengths
- Tight dimensional tolerance and fine chamfer edge treatment
Available Geometry & Custom Shapes
Standard round sapphire laser protective windows are our mainstream output. We also support non‑standard geometries for special laser and sensor projects.
- Round circular sapphire laser window (most popular for fiber laser head)
- Rectangular & chamfered rectangular sapphire optical window
- Oval, hexagonal custom sapphire window blanks
- Mini small‑size and large‑diameter sapphire laser optics
Technical Specifications
| Parameter | Value |
|---|---|
| Material | Sapphire (Al₂O₃) |
| Surface Quality | 10‑5 Scratch‑Dig |
| Surface Flatness | λ/10 @632.8 nm |
| Diameter Tolerance | ±0.1 mm |
| Thickness Tolerance | ±0.05 mm |
| Edge Treatment | Fine ground / chamfered |
| Coating Option | AR coating customizable for target wavelength |
AR‑BBAR Anti‑Reflection Coating Service
Interference color of coated surface varies with target operating wavelength. Tell us your working wavelength, we apply matched single‑band or broadband AR coating for your sapphire laser window.
- AR@1064 nm for infrared fiber laser cutting & welding
- AR@355 nm for UV laser marking system
- AR@532 nm for green laser equipment
- Custom BBAR broadband anti‑reflection coating upon request
Typical Application Scenarios
- High‑power fiber laser cutting head protective optics
- Laser welding machine sapphire laser window
- Laser resonator and laser chamber protective components
- Industrial laser marking and laser processing equipment
- Optical sensor, photoelectric detection protective window
Our Manufacturing & Quality Control
Felix Glass completes full‑process production including sapphire blank slicing, grinding, precision polishing, edge chamfering, optical coating and final inspection. Every sapphire laser window goes through surface defect, dimension and coating performance inspection before delivery.
Prototype & Volume Order Support
We accept small‑batch prototype orders for R&D testing, as well as mass‑volume production for serial equipment manufacturing. Please send your drawing, dimension requirement and target laser wavelength for quotation.
Get Your Custom Sapphire Laser Window Quotation
Fill in the form, attach your drawing or specification sheet, our optical engineer will reply within 24 working hours.
- What is your MOQ for custom optical glass and display glass parts?
Felix Glass offers highly flexible MOQ to support client projects, including prototype testing, small batch trial orders and large-volume mass production. All products can be fully customized according to your drawings, tolerances and application standards. Send us your specs to get an accurate price quote within 24 hours.
- Can I get free glass samples for testing before bulk order?
Yes, our FELIX GLASS factory supports sample testing for a wide range of precision optical glass components and assemblies. The lead time for sample production is 3 to 7 working days. Please contact us today to arrange samples and obtain a customized solution that meets your needs.
- What is the production lead time for custom optical glass components?
What is the production lead time for custom optical glass components?
Answer: The lead time for standard samples is 3–7 business days, while mass production takes 15–25 business days, depending on product complexity and order volume. We provide reliable, rapid delivery for orders serving the industrial, medical, automotive, and aerospace sectors. Please submit your project details to receive an accurate delivery schedule.
- Are your optical glass products ISO, CE and RoHS certified?
All FELIX GLASS precision optical glass components comply with ISO quality system standards, as well as CE and RoHS requirements. We provide comprehensive test reports, material certificates, and inspection documentation for customer review. Please feel free to request full certification details and a formal quotation today.
- Do you offer one-stop custom optical glass processing services?
Yes. We provide a full range of in-house processing services, including CNC machining, precision grinding, optical polishing, vacuum coating (AR, AF, AG, IR), tempering, and screen printing. Every step—from raw material to finished product—is carried out within our own facility. Please let us know your requirements, and we will provide you with the most cost-effective solution.
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