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Sapphire Laser Window | High‑Power Sapphire Optical Window from Felix Glass
| Share | |
|---|---|
| Categories | Sapphire Optical Windows |
| Brand | FELIX GLASS optical glass Manufacturing base |
| Model | FG-SLW-032 |
| Material | Optical‑grade single‑crystal sapphire |
| Crystal Orientation | C‑plane, A‑plane, R‑plane by review |
| Dimension | Round, square, rectangular or drawing-based |
| Tolerance | Drawing-dependent; critical dimensions reviewed |
| Surface Quality | Commercial to optical scratch-dig specification |
| Surface Flatness | Project-specific at agreed test wavelength |
| Transmission Band | Typical uncoated material range: approx. 0.2-5.5 um |
| Coating | Uncoated, AR, BBAR or custom by review |
| MOQ | Prototype and batch quantities reviewed |
| Custom Service | OEM & ODM, drawing‑to‑part manufacturing |
| Application | High‑power laser, LiDAR, medical laser, aerospace, semiconductor, underwater ROV optics |
| FOB port | SHENGZHEN SHANGHAI GUANGZHOU |
| Terms of Payment | L/C, D/A, D/P, Western Union, T/T |
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Custom Sapphire Laser Window
Key Product Benefits
- Mohs 9 ultra‑hard substrate, strong scratch & impact resistance
- Excellent thermal conductivity, resist thermal cracking under high‑power CW / pulsed laser
- Broad transmission: 170 nm deep‑UV up to 5.5 µm mid‑infrared
- High LIDT for high‑energy laser operation
- Multiple AR anti‑reflection coating options
- Fully custom geometry: round, square, wedged, mounting holes per drawing
Product Detailed Description
Sapphire laser window is a critical protective optical element widely adopted in demanding laser systems. Different from ordinary fused silica optical glass, single‑crystal sapphire delivers superior mechanical strength, thermal stability and chemical inertness, solving common pain‑points such as window scratching, thermal fracture and short service life under harsh working environments.
Hong Kong Felix Optical Glass Co., Limited performs full in‑house manufacturing workflow: raw sapphire crystal selection, precision cutting, grinding, ultra‑precision optical polishing, strict cleaning, optical coating and final metrology inspection. Every sapphire laser optical window can be customized according to customer mechanical drawings and optical requirements.
Core Material Properties of Sapphire Substrate
| Parameter | Value |
|---|---|
| Spectral Transmission | 170 nm ~ 5.5 µm |
| Mohs Hardness | 9 |
| Melting Point | 2030 °C |
| Thermal Conductivity(c‑axis) | ~35 W/(m·K) |
| Density | 3.98 g/cm³ |
| Max Continuous Working Temperature | 1500 °C |
| Chemical Resistance | Inert to most chemicals(except hot phosphoric acid) |
Available Coating Options
- Uncoated: Broad‑band general application, zero risk of coating failure under extreme temperature.
- Single‑wavelength AR Coating: Optimized for 1064 nm,532 nm,355 nm,266 nm etc, average reflectivity <0.2%.
- Broadband AR Coating: UV‑VIS‑NIR multi‑wavelength anti‑reflection coating for multi‑band laser equipment.
- Wedged window coating: Eliminate etalon interference for beam‑sampling laser optics.
Typical LIDT for coated sapphire laser window: 5‑20 J/cm² @10 ns pulse. LIDT test report can be supplied for high‑energy laser projects upon request.
Technical Specifications
| Specification Item | Customizable Standard Range |
|---|---|
| Substrate | Synthetic single‑crystal sapphire Al₂O₃ |
| Size Range | 3 mm‑300 mm (round / square / special shape) |
| Thickness | 0.3 mm‑25 mm |
| Dimensional Tolerance | ±0.05 mm(tighter tolerance optional) |
| Surface Flatness | λ/2 ~ λ/10 @632.8 nm |
| Surface Quality | 60‑40,40‑20 MIL‑PRF‑13830 |
| Parallelism | ≤3 arcmin; high‑precision ≤10 arcsec optional |
| Wedge Angle | 0‑5 degrees customizable |
| Crystal Orientation | C‑plane / A‑plane / R‑plane custom |
| Edge Treatment | Fine‑ground, chamfer, polished edge |
| Mounting Feature | Through‑holes, counter‑sink holes, notches |
Typical Applications
- High‑power fiber laser, Nd:YAG, excimer laser cutting, marking & micro‑processing equipment
- Automotive & airborne LiDAR protective optical window
- Surgical & aesthetic medical laser devices
- Laboratory high‑energy femtosecond laser systems
- Semiconductor wafer inspection chamber viewports
- ROV underwater laser imaging & detection systems
- Aerospace UV‑MIR optical systems with wide temperature variation
Sapphire vs Fused Silica Window Material Comparison
| Performance | Sapphire Laser Window | Fused Silica Window |
|---|---|---|
| Mohs Hardness | 9, excellent scratch‑resistance | 5.5‑6.5, easy to scratch |
| Max Working Temperature | Up to 1500°C | ~1000‑1100°C |
| IR Transmission Cut‑off | ~5.5 µm | ~3.5 µm |
| Thermal‑Shock Resistance | Excellent | Good, inferior to sapphire |
| Birefringence | Yes(crystal‑orientation controllable) | None(isotropic glass) |
| Ideal Scenarios | High‑power, high‑temp, wear‑prone environment | Deep‑UV, low‑medium power, cost‑sensitive projects |
Suggestion: Choose sapphire for hundreds‑watt‑and‑above continuous‑wave laser or abrasive / high‑temperature working conditions.
Frequently Asked Questions
Q: Should I select sapphire or fused silica laser window?
A: Pick sapphire for high‑power laser, high‑temperature or abrasion‑prone environment. Fused silica fits deep‑UV, low‑to‑medium‑power cost‑oriented applications.
Q: Can you deliver LIDT test report for sapphire laser window?
A: Yes, test reports including LIDT, interferometer flatness, transmission spectrum are available on request, extra lead‑time applies.
Q: Can sapphire laser window be machined with mounting holes?
A: Yes, we process through‑holes, counter‑sink holes and notches based on customer drawings.
Q: What crystal orientation options do you support?
A: C‑plane, A‑plane, R‑plane sapphire substrates for polarization‑sensitive laser systems to manage birefringence impact.
Submit Custom Requirement
Please provide dimension, target wavelength, coating requirement, quantity and drawing. Hong Kong Felix Optical Glass Co., Limited will respond within 24 working hours.
Need Custom Optical Glass Solution?
Send us your drawing, dimension & coating requirements for fast quotation within 24 hours.
Get Free RFQ
Custom Precision Optical & Glass Components Manufacturer – Felix Glass Co., Limited.
We supply Industrial Glass, Sapphire Optics, Optical Lenses/Prisms/Filters, Infrared IR Optics, Functional & Display Glass, N-BK7/H-K9L Optical Glass, supporting OEM mass production and laboratory custom prototypes. Flexible MOQ & free sample service available. Fill in the form to download full datasheets and get factory wholesale price within 24 hours.
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- 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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