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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 the minimum order quantity for custom precision optical glass components?
FELIX OPTICAL GLASS offers highly flexible MOQs to support customer projects, including prototype testing, small-batch trial orders, and high-volume production. All products can be fully customized to your drawings, tolerances, and application standards. Please send us your specifications, and we will reply within 1-5 hours and provide an accurate quotation after careful evaluation within 1-2 days.
- 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?
A: The production cycle for standard samples is 3-10 working days, while mass production requires 15-35 working days, depending on the complexity of the product and the order quantity. We provide reliable precision optical glass components and fast delivery services for orders from industries such as defense, industrial equipment, medical devices, shipbuilding, robotics, automotive, and aerospace. Please submit your project details so we can provide you with an accurate delivery schedule.
- Are your optical glass products ISO, CE and RoHS certified?
All precision optical glass components from FELIX OPTICAL GLASS comply with ISO quality system standards as well as CE and RoHS requirements. We provide comprehensive test reports, spectral graphs, material certificates, and inspection documents for customer review. Please feel free to request complete certification details and a formal quotation at any time.
- Do you offer one-stop custom optical glass processing services?
Yes. We offer a full range of precision optical glass component processing services, including CNC machining, precision grinding, optical polishing, chemical/physical tempering, vacuum coating (AR anti-reflective coating, AF anti-fingerprint coating, AG anti-glare coating, IR infrared coating), and screen printing. From raw materials to finished products, every step is completed in our own factory. Please tell us your needs, and we will provide you with the most cost-effective solution.
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With 19 years of experience as a precision optical glass expert, we provide comprehensive and satisfactory customized solutions.
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