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Адрес
Jichuan Street, Taixing City, Jiangsu Province
Категории продукта
Taixing Hechen Crystal Technology Co., Ltd
Gallium Arsenide Window Plates
ДоговариваемыйОбновление на05/19
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Обзор
Gallium arsenide (GaAs) crystals have good chemical stability, high hardness, and resistance to harsh environments. It has good transmittance in the spectral range of 2000nm-14000nm and is widely used in thermal infrared imaging systems, high-power CO2 laser optical systems, and FLIR systems. In poor on-site environments where optical lenses and windows need to be repeatedly wiped, gallium arsenide is often used as a substitute for zinc selenide as the material for infrared lenses or windows.
Подробности о продукте
Gallium arsenide (GaAs) crystals have good chemical stability, high hardness, and resistance to harsh environments. It has good transmittance in the spectral range of 2000nm-14000nm and is widely used in thermal infrared imaging systems, high-power CO2 laser optical systems, and FLIR systems. In poor on-site environments where optical lenses and windows need to be repeatedly wiped, gallium arsenide is often used as a substitute for zinc selenide as the material for infrared lenses or windows.
Variation of refractive index with wavelength
| Wavelength (nm) |
Refractive index (n) | Wavelength (nm) | Refractive index (n) |
| 4000 | 3.31 | 14500 |
2.82 |
| 8000 | 3.34 | 15000 | 2.73 |
| 10000 |
3.13 |
17000 | 2.59 |
| 11000 | 3.04 |
19000 |
2.41 |
| 13000 |
2.97 |
21900 | 2.12 |
optical properties
| By wavelength range |
1000nm-14000nm |
| Absorption coefficient (1/cm) | 0.01@1500nm-11000nm |
| Thermal optical coefficient, dn/dT（1/K） | 160-120*10^-6%@3000nm-12000nm |
Physicochemical properties
| Density (g/cm3) |
5.32 |
| Melting point (℃) | 1238 |
| Thermal expansion coefficient (1/℃) | 5.7*10^ -6@300K |
| Static dielectric constant/high frame rate | 12.85/ 10.88@300K |
| Modulus of elasticity (GPa) | 101.32 |
| Shear modulus (GPa) | 55.66@298K |
| Thermal conductivity (J/k.m.s) | 55@300K |
| Heat capacity (J/g.k) |
0.32 |
| Knoop hardness (kg/mm2) |
731 |
| Water solubility (g/l) | 1.7 |
| Young's modulus (GPa) | 138.5@298K |
| Poisson's ratio | 0.31@293K |
