Specialty HEM Sapphire Products
概述GT Crystal Systems 藍寶石被認為是可用於卓越光學、機械、傳動裝置效能的最高商業質量的藍寶石。我們先進的藍寶石生產效能為我們的客戶提供所需的品質和靈活性，滿足最高標準應用的材料要求。 Hemex™ Sapphire - is world renowned for showing no stress birefringence, no bubbles and no other defects HEM (LAOS) - Low Absorption Optical Sapphire - used in applications where minimal photon absorption is critical.
Hemex™ Sapphire
GT Advanced Technologies sapphire material group, GT Crystal Systems, produces the world’s highest quality sapphire called Hemex Sapphire. This special sapphire has perfect crystalline structure with no detectable light scatter and is capable of supporting finished optics with transmitted wave front values of 1/20 wave peak to valley and better. Hemex material has been independently characterized using Berg-Barrett X-Ray topography which concluded that no dislocations in the crystalline structure could be found. These superior crystals are utilized in applications where no compromises can be made; Hemex is the absolute pinnacle of sapphire quality. Attributes and FeaturesHemex 材料因無應力雙折射、泡沫以及其他瑕疵而聞名世界。 ApplicationsHemex is used in critical engineering applications where zero defect sapphire is needed to support the fabrication of sophisticated optical components and systems. These applications can include high power laser optics, acoustic wave devices, 1/10 wave optics and neutron filters. HEM (LAOS) Low Absorption Optical SapphireGT’s Low Absorption Optical Sapphire (LAOS) is used in applications where minimal photon absorption is critical. The material is ultra high-purity and is processed in specialized conditions in order to avoid absorption bands. LAOS material can be optimized for the precise application wavelength, for instance 1064nm, which is a common high power laser wave length. Photothermal Common-path Interferometry has shown LAOS sapphire to have as little absorption as 41ppm/cm at 1064nm. LAOS material can be developed specifically for the wavelengths of your system. Attributes and Features• Low absorption optimized for your wavelength ApplicationsLAOS is used for high power laser windows where photon absorption cannot be tolerated. If unwanted photons are absorbed by the intrinsic optical material thermal gradients will result, which can cause thermal lensing or catastrophic failure of the optical element. LAOS is ideally suited for situations where every photon counts. LAOS is available on special request according to the design of your optic and its spectral operating range.
HEM (VUV) Vacuum Ultra Violet SapphireHEM VUV (vacuum ultra violet) grade of sapphire is a special sapphire product optimized for UV and VUV applications where transmission is improved below 260 nm. HEM VUV (vacuum ultra violet) grade of sapphire combines high purity with extremely low defect density and special processing steps; the resulting material transmits light at the 205 nm range where standard sapphire material absorbs the light.The VUV grade of sapphire is especially resistant to solarization and damage from radiation and the effects of long term immersion in high power UV light.
Attributes and Features• Maximized transmission @ 205nm ApplicationsHEM VUV material is optimized for use under 260nm. The optical community is finding new opportunities to leverage sapphire’s mechanical strength at wave lengths previously unsuited for sapphire. HEM VUV material is now available for use in the vacuum and vacuum ultra violet spectral regions. This material excels in applications such as Raman Spectroscopy, white light generation, 193nm lithography and for use as laser optics.
Please contact sapphiresales@gtat.com or call +1.978.745.0088 with any questions. |
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