As an excellent filter material, sapphire has good transmittance in the ultraviolet, infrared and visible wavelength. Sapphire can transmit electromagnetic waves and hardly change the properties and energy of electromagnetic waves.
CRYSCORE can supply sapphire optical windows in C-cut with excellent flatness, parallelism, and optical polishing. Scratch / Dig < 10 / 5. Edge chips < 0.2 nm.
| Item | 3” x 3” C-plane(0001) 500μm Sapphire Windows |
| Crystal Materials | 99,999%, High Purity, Monocrystalline Al2O3 |
| Grade | Prime, Epi-Polished |
| Surface Orientation | C-plane(0001) |
| Size | 76.2 mm +/- 0.1 mm x 76.2 mm +/- 0.1 mm |
| Thickness | 500 μm +/- 25 μm |
| Front Surface | Epi-polished, Ra < 0.2 nm (by AFM) |
| Back Surface | Epi-polished, Ra < 0.2 nm (by AFM) |
| TTV | < 15 μm |
| WARP | < 40 μm |
| Flatness | 2λ Peak-Valley @633 nm each Ø8 mm |
| Cleaning / Packaging | Class 100 cleanroom cleaning and vacuum packaging, 25 pcs in one cassette packaging. |
Note: Custom sapphire windows with any orientation and any thickness can be provided.
Introduction to the Manufacturing Process of Sapphire Ingot
Company brochure
The Technical Difference Between the Kyropoulos Method and the Czochralski Method for Growing Sapphire Crystals
