Custom Sapphire Window for Vacuum & Optical Systems
Design-Realized provides custom sapphire windows for vacuum viewports, optical diagnostics, and high-temperature reactors. Our research-grade sapphire windows support UV to IR transmission, UHV compatibility, and custom sealing designs for advanced university laboratories and startup R&D systems.
Typical projects include vacuum chamber viewports, reactor observation windows, and optical access windows for spectroscopy and laser monitoring.
Key Applications
Vacuum / UHV Viewports
- High-vacuum & UHV optical access
- Plasma chambers and process tools
- ALD / MBE / analytical instruments
Optical / Laser Diagnostics
- UV–IR transparent optical windows
- Spectroscopy and imaging access
- High-power laser monitoring (application dependent)
High-Temperature Observation
- Furnace observation windows
- CVD / reactor optical ports
- Harsh environment test chambers
Technical Capabilities
| Parameter | Specification |
|---|---|
| Material | Single-crystal Sapphire (Al2O3) |
| Purity | Up to 99.999% (by request) |
| Diameter | Custom (typical projects ≤ 150 mm) |
| Thickness | Custom (application dependent) |
| Surface Finish | Optical polish available (Ra < 2 nm on request) |
| Transmission | UV–IR (wavelength range depends on thickness/coatings) |
| Coatings | AR coatings available (by wavelength) |
| Sealing / Mounting | CF / KF / O-ring / custom flange solutions |
| Typical Lead Time | 3–4 weeks (depends on specs and inspection level) |
Note: Maximum temperature and lifetime depend on vacuum level, atmosphere, pressure, sealing method, and thermal gradients.
Sealing & Mounting Options
- CF (ConFlat) metal seal: UHV-compatible solutions for research chambers.
- Elastomer O-ring: cost-effective sealing for many vacuum and optical systems.
- Custom flange integration: sapphire window sized to your mechanical interface and port geometry.
- Coating alignment: AR coatings specified by wavelength band for improved optical throughput.
Why Design-Realized
Documentation and QA options suitable for university labs and research programs.
Low MOQ with typical 3–4 week lead times for R&D and early-stage teams.
Sealing, polishing, and coating guidance based on operating conditions.
NDA available for proprietary designs and confidential development work.
Request a Custom Quote
To quote accurately, please include:
- Diameter & thickness
- Wavelength band (UV/Vis/NIR/IR) and any AR coating needs
- Sealing method (CF/KF/O-ring/custom flange)
- Operating temperature, pressure/vacuum level, and environment (gas/chemistry)
- Quantity and delivery timeline
Submit via your RFQ form and we will respond with technical feedback and a quotation.
FAQ
What is the typical lead time for custom sapphire windows?
Typical lead time is 3–4 weeks, depending on diameter, thickness, polishing/coating, and inspection level.
Can sapphire windows be used for UHV?
Yes. Sapphire is commonly used for vacuum viewports. Final compatibility depends on the sealing method and assembly design.
Do you support small-batch or prototype orders?
Yes. We support low MOQ and prototype-friendly production for university labs and startups.
Can you provide AR coatings?
Yes. AR coatings can be specified by wavelength band and optical requirements.
Sapphire vs quartz windows — which should I choose?
Sapphire generally offers higher mechanical strength and better high-temperature stability than quartz. Selection depends on temperature, pressure, and optical requirements.
