Sapphire Windows and Al2O3 Wafers for Sale
UniversityWafer supplies sapphire windows and Al2O3 sapphire wafers for optical, LED, semiconductor, laser, high-temperature, and research applications. Sapphire is valued for its hardness, chemical resistance, optical transmission, and durability in demanding environments.
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Buy as few as one sapphire wafer or request volume pricing for production quantities. We stock small sapphire windows, 50.8 mm sapphire wafers, 100 mm sapphire wafers, 150 mm sapphire wafers, and custom sapphire substrates up to 200 mm in diameter.
Below are examples of sapphire windows and Al2O3 wafers available for optical research, LED development, semiconductor processing, vacuum windows, protective covers, and high-temperature applications.
| Item # | Diameter / Size | Orientation | Thickness | Polish |
|---|---|---|---|---|
| 3156 | Rectangle | <0001> | 500 µm | SSP |
| 3467 | 10 mm × 10 mm | <0001> | 430 µm | DSP |
| 3409 | 6.0 mm | <0001> | 100 µm | DSP |
| 1251 | 50.8 mm | <0001> | 430 µm | DSP |
| 1306 | 50.8 mm | <0001> | 430 µm | SSP |
| 2768 | 50.8 mm | <0001> | 330 µm | DSP |
| 3407 | 50.8 mm | <0001> | 100 µm | DSP |
| 1732 | 100 mm | <0001> | 650 µm | SSP |
| 2562 | 100 mm | <0001> | 650 µm | DSP |
Popular Sapphire Wafer Sizes
- 50.8 mm Sapphire Wafers 430 µm DSP
- 76.2 mm Sapphire Wafers 350 µm SSP
- 100 mm Sapphire Wafers 600 µm DSP
- 150 mm Sapphire Wafers
- 200 mm Sapphire Wafers 1 mm SSP
Other sapphire window diameters, diced pieces, orientations, thicknesses, and polish options are also available.
Sapphire Window Orientations
Sapphire windows, also known as Al2O3 optical windows, are available in several crystal orientations depending on the optical, mechanical, LED, semiconductor, and research application. UniversityWafer supplies sapphire windows in standard and custom sizes with SSP, DSP, epi-polished, and fine-ground surface finishes.
- C-Plane Sapphire (0001): commonly used for optical windows, LED substrates, GaN growth, and general sapphire wafer applications.
- A-Plane Sapphire (11-20): used for optical, electronic, and specialized crystal growth applications.
- M-Plane Sapphire (11-10): selected for specialized research, photonics, and non-polar sapphire applications.
- R-Plane Sapphire (10-12): used for optical, sensor, and electronic device research.
A-Plane Sapphire Window Inventory
A-plane sapphire windows are available in small-format pieces for optical testing, laboratory research, semiconductor processing, and custom device fabrication.
- Al2O3 sapphire wafer, 5 mm × 5 mm × 0.5 mm, A-plane (11-20), DSP
- Al2O3 sapphire wafer, 5 mm × 5 mm × 0.5 mm, A-plane (11-20), SSP
C-Plane Sapphire Window Inventory
C-plane sapphire windows are one of the most commonly requested sapphire orientations for optical transmission, LED research, GaN epitaxy, high-temperature windows, and durable transparent substrates.
50.8 mm C-Plane Sapphire Window — Epi / Fine Ground
- Diameter: 50.8 ± 0.1 mm
- Orientation: C-Plane (0001)
- Off-Axis: M-axis 0.2 ± 0.1° off, A-axis 0 ± 0.1° off
- Primary Flat Orientation: A-plane (11-20) ± 0.3°
- Primary Flat Length: 16.0 ± 1 mm
- Thickness: 400 ± 15 µm
- Bow: ≤ 10 µm
- TTV: ≤ 10 µm
- Micro-Roughness: Ra ≤ 0.3 nm
- Front Surface Finish: Epi-polished
- Back Surface Finish: Fine ground
- Packing: Vacuum-sealed in 25-wafer packs
50.8 mm C-Plane Sapphire Window — Double Epi-Polished
- Diameter: 50.8 ± 0.1 mm
- Orientation: C-Plane (0001)
- Off-Axis: M-axis 0.2 ± 0.1° off, A-axis 0 ± 0.1° off
- Primary Flat Orientation: A-plane (11-20) ± 0.3°
- Primary Flat Length: 16.0 ± 1 mm
- Thickness: 400 ± 15 µm
- Bow: ≤ 10 µm
- TTV: ≤ 10 µm
- Micro-Roughness: Ra ≤ 0.3 nm
- Front Surface Finish: Epi-polished
- Back Surface Finish: Epi-polished
- Packing: Vacuum-sealed in 25-wafer packs
Small C-Plane Sapphire Windows
- Al2O3 sapphire wafer, C-plane (0001), 5 mm × 5 mm × 0.5 mm, SSP
- Al2O3 sapphire wafer, C-plane (0001), 5 mm × 5 mm × 0.5 mm, DSP
- Al2O3 sapphire wafer, C-plane (0001), 10 mm × 5 mm × 0.5 mm, DSP
- Al2O3 sapphire wafer, C-plane (0001), 10 mm × 10 mm × 0.1 mm, DSP
- Al2O3 sapphire wafer, C-plane (0001), 10 mm × 10 mm × 0.1 mm, SSP
Optical Sapphire Window Applications
Sapphire windows offer excellent hardness, chemical resistance, high-temperature stability, and optical transmission. These properties make optical sapphire useful for demanding research and production environments.
- Laser windows and optical viewports
- High-temperature optical windows
- LED and GaN-on-sapphire research
- Semiconductor processing and inspection
- Vacuum chamber windows
- Sensor covers and protective optical glass
- Photonics, spectroscopy, and optical testing
- Wear-resistant transparent substrates
M-Plane Sapphire Window Inventory
M-plane sapphire windows are available for non-polar sapphire research, photonics studies, crystal orientation experiments, and specialized electronic or optical device work.
- Al2O3 sapphire wafer, M-plane (11-10), 5 mm × 5 mm × 0.5 mm, DSP
- Al2O3 sapphire wafer, M-plane (11-10), 5 mm × 5 mm × 0.5 mm, SSP
R-Plane Sapphire Window Inventory
R-plane sapphire windows are used in optical, electronic, sensor, and research applications that require a specific Al2O3 crystal orientation.
- Al2O3 sapphire wafer, R-plane (10-12), 5 mm × 5 mm × 0.5 mm, SSP
Request Sapphire Window Pricing
Let us know the sapphire window diameter, thickness, orientation, polish, flatness, surface finish, and quantity you need. UniversityWafer can quote in-stock sapphire windows or custom-manufactured Al2O3 windows up to 200 mm in diameter.