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红外硒化锌窗口片

砷化锌(ZnSe)广泛用于红外元件,有红外窗口和透镜。产品主要应用于热成像,FLIR,医疗系统和二氧化碳激光器等。
  • 产品产地:

    中国
  • 航运港口:

    中国福州
  • 交付周期:

    四周
  • 付款:

    银行电汇, 西联付款
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  • 描述

硒化锌(ZnSe)窗是各种红外应用的理想选择,包括热成像,FLIR和医疗系统。 这种化学气相沉积材料由于其低吸收系数和高抗热冲击性而在高功率CO2激光系统中具有广泛的用途。 硒化锌(ZnSe)是一种相对柔软的材料,容易划伤,不推荐在恶劣的环境中使用,因为其努氏硬度仅为120。处理时施加均匀的压力并佩戴乳胶手指套或手套以防止污染。

注意:处理硒化锌时应特别小心,因为它是一种有毒物质。 始终戴橡胶或塑料手套,以避免污染的风险。



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红外材料

1.  Germanium (Ge)


Germanium (Ge) is the preferred lens and window material for high performance infrared imaging systems in the 8–12 μm wavelength band. Its high refractive index makes Ge ideal for low power imaging systems because of minimum surface curvature. Chromatic aberration is small, often eliminating the need for correction.

 

Crystallographic properties
Syngony Cubic
Crystal Form Poly or Single Crystal
Lattice Constant 5.66
Cleavability <111>, non-perfect
Molecular Weight 72.6
Physical properties
Density, at 20 °C 5.33
Hardness, Mohs 6.3
Dielectric Constant for 9.37 × 109 Hz at 300 K 16.6
Melting 937
Thermal Conductivity, W/m·K at at 293 K 59
Thermal Expansion, 1/K at 298 K 6.1 × 10-6
Specific Heat Capacity, J/(kgK) at 273-373 K 0.074
Bandgap, eV 0.67
Knoop Hardness, kg/mm2 800
Youngs Modulus, Gpa 102.66
Shear Modulus, GPa 67.04
Bulk Modulus, GPa 77.86
Debye Temperature, K 370
Poissons Ratio 0.278
Elastic Coefficient C11=129, C12=48.3, C44=67.1
Apparent Elastic Limit 89.6 MPa (13000psi)
Chemical properties
Solubility in water None
Solubility in acids Soluble
Molecular Weight 72.59

2. Silicon (Si) 


Silicon (Si) is grown by Czochralski pulling techniques (CZ) and contains some oxygen that causes an absorption band at 9 microns.To avoid this, material can be prepared by a Float-Zone (FZ) process. Optical silicon is generally lightly doped (5 to 40 ohm cm) for best transmission above 10 microns, and doping is usually boron (P-type) and phosphorus (N-type). After doping silicon has a further pass band: 30 to 100 microns which is effective only in very high resistivity uncompensated material.
 
CZ Silicon is commonly used as substrate material for infrared reflectors and windows in the 1.5-8 micron region. The strong absorption band at 9 microns makes it unsuitable for CO2 laser transmission applications, but it is frequently used for laser mirrors because of its high thermal conductivity and low density. Application as window, lens in the 1.5 - 8 um region; Mirror for CO2 laser and spectrometer applications.
 

Crystallographic properties
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Lattice Constant, A 5.43
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Density 2.33g/cm3
Hardness, Mohs 7
Dielectric Constant for 9.37 x 109 Hz 13
Melting point, оС 1414
Thermal Conductivity, W/m·K at 313 K 163
Thermal Expansion, 1/K at 293 K 2.6x10-6
Specific Heat Capacity, J/(kg°C) 712.8
Bandgap, eV 1.1
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Specifications:

Material: ZnS MultiSpectral
Diameter Tolerance: --------------------- +0.0, -0.1mm
Thickness Tolerance: -------------------- ±0.1mm
Clear Aperture: ---------------------------->85%
Parallelism: -----------------------------------3 arc minute
Surface Quality: ----------------------------80-50 scratch and dig
Wavefront Distortion: -------------------- λ /2 per 25mm @633mm
Bevel: -----------------------------------------Protective  (<0.2mm x 45° )
Coating: -------------------------------------- Optional (Uncoated, AR Coating, etc.)


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ZnSe is non-hygroscopic and chemically stable, unless treated with strong acids. It’s safe to use in most industrial field, and laboratory environments.



红外氟化镁窗片
氟化镁窗片

氟化镁窗适用于宽范围光谱,可以很好地传输到氢气Lyman-alpha线及以后的VUV区域,特别适用于准分子激光应用。


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