Sapphire is a single crystal aluminum oxide (Al2O3).Its Mohs hardness is 9,it is one of the hardest materials.Sapphire has good mechanical strength,and it is also transparent from visible to IR spectrum.So,it is always used as window material where scratch resistance is required.
Item No :
Sapphire MaterialProduct Origin :
FuZhouProperties:
| Transmission range: | 180nm ~ 4500nm |
| Lattice Constant: | a=4.75 A; c=12.97A |
| Density: | 3.98 g/cm3 |
| Thermal Conductivity: | 0.04W/m/K |
| Refractive Index: | 1.755@1um |
| Expansion Coefficient: | 8.4x10-6/K |
| Mohs Hardness: | 9 |
| Melting Point: | 2030℃ |
Germanium (Ge) is widely used in far infrared wavelength,it is transparent from 2000nm to 17000nm.Germanium also has higher refractive index about 4 at 10.6 micron.Germanium is very popular in FLIR and imaging applications.Ge windows and lenses can be manufactured by MT-Optics,Inc.
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Germanium Windows are made from Germanium material, which has transparent range from 2 to 17 micron. MT-Optics,Inc. can kindly process this Ge as windows, mirrors, lenses etc.
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Sapphire is a single crystal aluminum oxide (Al2O3).Its Mohs hardness is 9,it is one of the hardest materials.Sapphire has good mechanical strength,and it is also transparent from visible to IR spectrum.So,it is always used as window material where scratch resistance is required.
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MgF2 is a tetragonal positive birefringent crystal.MgF2 has good chemical,mechanical and thermal characteristics compared with CaF2.Due to its high vacuum UV transmission and high damage threshold,MgF2 is usually used in VUV andexcimer laser windows,polarizers,lenses and etc.
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Sapphire Windows are made from Sapphire material, which has transparent range from 180-4500nm. The refractive index is 1.755 at 1000nm.
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MgF2 Windows are made from Magnesium Fluoride material, which has transparent range from 120-7000 nm. The refractive index is 1.376 at 7000nm.
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MgF2 is a tetragonal positive birefringent crystal.MgF2 has good chemical,mechanical and thermal characteristics compared with CaF2.Due to its high vacuum UV transmission and high damage threshold,MgF2 is usually used in VUV andexcimer laser windows,polarizers, lenses and etc.
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CaF2 Windows are made from Calcium Fluoride material, which has transparent range from 170-7800nm. The refractive index is 1.399 at 5000nm. It has little hygroscopic susceptibility and high thermal expansion coefficient. CaF2 Windows are relatively soft and somewhat hygroscopic so polishing, coating and handling are more critical than UV Fused Silica windows.
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Zinc sulfide (ZnS) exists in two material forms: a white multispectral material and a yellow virgin material. Both are chemically inert, featuring high purity, insolubility in water, moderate density, and ease of processing. Due to its broad transmission wavelength range (500–10000 nm), zinc sulfide (ZnS) is widely used in manufacturing infrared windows, domes, and infrared optical components.
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