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激光晶体

晶体最适用于激光应用。 UNI OPTICS提供以下晶体产品。

1.激光晶体和棒:YAG晶体,Nd:YVO4晶体
2.非线性晶体:BBO,KTP,LiNbO3,LBO。KDP&DKDP
3.双折射晶体:YVO4,a-BBO,方解石。


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相关产品
Optical color less glass
光学玻璃
光学玻璃可以改变光的方向,以及紫外光,可见光或红外光的相对光谱分布。光学玻璃材料是最常见的类型,因为它具有优异的光学性能,如高透光性和环境稳定性。
Colored Glass Substrates
有色玻璃(截至型,选择吸收型,中性密度型)

UNI Optics供应材料包括中性密度,短程,长通,带通,紫外线,红外线,吸热和色温转换滤光片。

UN Grade Fused Silica
融石英
融石英由硅和氧的化学结合形成。 熔融石英是一种完美的光学材料,因为它具有良好的紫外和红外透射率,低热膨胀系数。 它具有高稳定性,耐大温度偏移,宽温度工作范围和高激光损伤阈值的热冲击。
IR Optics material
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
Syngony Cubic
Lattice Constant, A 5.43
Physical properties
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
Knoop Hardness, kg/mm2 1100
Youngs Modulus, Gpa 130.91
Shear Modulus, GPan 79.92
Bulk Modulus, GPa 101.97
Debye Temperature, K 640
Poissons Ratio 0.28
Chemical properties
Solubility in water None
Molecular Weight 28.09

3、ZnS material:


ZnS MultiSpectral Under intense heat and pressure, defects within the crystalline lattice are virtually eliminated, leaving a water-clear material with minimal scatter and high transmission characteristics from 0.4 to 12 microns. This material is particularly well suited for high-performance common aperture systems that must perform across a broad wavelength spectrum.

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.)


4. ZnSe material


ZnSe is a preferred material for lenses, windows, output couplers and beam expanders for its low absorptivity at infrared wavelengths and its visible transmission. For high-power applications, it’s critical that the material bulk absorption and internal defect structure be carefully controlled, that minimum-damage polishing technology be employed, and the highest quality optical thin-film coatings are used. The material absorption is verified by CO2 laser vacuum calorimetry. Our quality assurance department provides testing and specific optics certification on request.

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



镀增透膜BK7直角棱镜
镀宽带增透膜的斜边直角棱镜

直角棱镜通常用于改变光路,或用于将光束重新定向90°。直角棱镜是设计成90°角的棱镜,根据棱镜的方向产生倒置或反转的左手图像,同时使用两个直角棱镜是理想的使图像或光束位移的应用这些棱镜也被称为镜像反射棱镜

有色玻璃窗片
镀增透膜有色玻璃窗片
有色玻璃改变了光辐射的光谱特性。 因此,它们允许在需要改变的情况下进行科学实验和工业应用。 您可以将彩色玻璃滤镜组合在一起以更改带通或增加衰减。
蓝宝石窗片
镀增透膜蓝宝石窗片

蓝宝石窗片在高温下保持高强度,具有良好的热性能和卓越的透明度。它在高达1000°C的温度下对常见的酸和碱具有耐化学性,对于低于300°C的氟化氢也具有耐化学性。 这些特性促使其广泛用于需要在从真空紫外线到近红外范围内的进行光传输的恶劣环境中。

色散棱镜
30° - 60° - 90°色散棱镜

色散棱镜用于需要将入射光分离成其组成波长的应用中。例如,当白光进入色散棱镜时,它被分成三个部分:红、绿和蓝。色散棱镜是理想的光谱学或激光调谐。

菱形棱镜
高精度菱形棱镜

菱形棱镜的应用是在不影响图像方向的情况下控制和重定向光路。它们可以用来取代光学中心线的光束折叠和不同尺寸的立体系统.

喷黑漆角锥
N-BK7角锥棱镜

角锥棱镜又称反射它有三个相互垂直的表面和一个斜边面。通过斜边进入的光依次被三个表面反射,并通过平行于入射光束的斜边面出现,而不考虑入射光束的方向由于其特殊的性能,常被用于距离测量、光学信号处理和激光等领域。

可见光镀增透消色差透镜
宽带增透膜消色差透镜

消色差透镜用来减小或消除色差。消色差透镜设计亦有助于减少球面像差。消色差透镜是一系列应用的理想选择,包括荧光显微镜、图像中继、检测或光谱学。消色差透镜通常是将两个元件胶合在一起或将两个元件安装在一个机械件中,它所产生的光斑尺寸比类似的单透镜要小。


定制平凹圆型柱面镜
平凹圆型柱面镜

平凹柱面镜为合成光束扩散及其广泛应用提供了单轴负成像。如果需要柱面镜凹面作为反射镜,这些透镜可用作镜坯。

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