bright Other sapphire crystal window Products

Product Description

The performed analysis indicates that one of most important problems for the development of sapphire production is the increase in the size of the crystals. This is explained not only by economic considerations, but also by technical require-ments. Large-size sapphire crystals are needed for optics and airborne windows with apertures of 600 mm and larger (for the medium-wave IR region of the spec-trum). At present, the only material used for the windows with a diameter greater than 300 mm is ZnSe. Its ultimate strength reaches 69 MPa (10,000 psi). Large-size windows have a thickness of 20 mm or more, and such a thickness makes the win-dows heavy and expensive. Moreover, it gives rise to an essential optical scattering.

Although there are lots substrates which are regarded as potential materials to replace sapphire substrate, it is still dominated in the substrates (for GaN LED growth) market, because of its reasonable price and relatively low mismatch. Zhongju is capable of processing substrates according to customer needs. Currently, our sapphire substrate productions ranges from 2 to 12 inches with high quality and accurate orientation.