The GEW13AR.20 is a 3 μm to 12 μm antireflection coated, 25.0 mm in diameter and 3.0 mm thick Germanium window. Germanium has high index of refraction, making it a perfect choice for applications that require low dispersion. The AR coating provides high transmission from 2 μm to 16 μm while reducing the high surface reflectivity of the substrate. With its broad transmission range and opacity in the visible spectrum, Germanium is a popular choice for MWIR (Mid-Wave Infrared) laser applications.

• 直径

  25.0 mm

• 材料

  Optical Grade Germanium

• 增透膜

  3-12 µm

• 表面平面度

  λ/20 @ 10.6 µm

• 表面质量

  40-20 scratch-dig

• 厚度

  3.0 mm  

• 厚度公差

  ± 0.1 mm

• 平行度

  < 1 arc minute

• 清洁

  See How to Clean Optics

• 通光孔径

  Central 90% of diameter

• 直径公差

  +0.0/-0.1 mm

• 镀膜代码

  AR.20

GEW13AR。20是一个3μm 12μm防反射涂层,直径25.0毫米和3.0毫米厚锗窗。锗具有高折射率，是低色散应用的理想选择。基于“增大化现实”技术涂层提供高传输从2μm 16μm同时降低衬底的表面反射率高。锗由于其广泛的透射范围和可见光谱的不透明度，是MWIR(中波红外)激光应用的热门选择。