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

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。

1.什么是激光窗片

激光防护窗，也称为激光防护玻璃、防护滤光片或焊接防护窗，主要应用于保护高成本的激光光学元件，以节省资金。

2.激光窗的主要用途是什么？

这些窗口片通常用于激光切割、激光焊接等设备上，用以避免高精度的激光光学器件因加工时材料飞溅而造成的损坏。

3.优恩立激光窗口片的主要优势

高传输率

高损伤阈值

低散射

低吸收

优良的膜层密度

良好的环境稳定性

常规规格：

尺寸：4-80毫米，圆形或方形

材质：BK7、熔融石英、ZnSe等

表面质量：10/5

面型：lambda/10@632.8nm

平行度：30''

粗糙度：3A

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。

IPL滤光片是IPL（强脉冲光）机器的关键光学元件，可阻挡紫外波，并为激光设备传输400nm至1200nm的有用波，如光子嫩肤脱毛、血管和痤疮治疗、皮肤再生。

非偏振分光棱镜(NPBS)也称为NPBS立体分光镜，是一种更复杂的类型，由两个直角棱镜组成，它们在斜边面处被固定一起。一个棱镜的胶合面有镀膜，在胶合之前，镀有所需反射性能的金属介质膜，具有特定的反射百分比和颜色。镀膜吸收损耗最小，透过率与反射率可设为10%、20%、30%、40%、50%等。

氟化钙窗片及透镜用于紫外和红外光谱。根据客户的要求定制CaF2窗片、CaF2透镜和楔角片以及直径220毫米以上的CaF2窗。

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.

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.
 

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.