germanium Ge window

The germanium Ge window has a high refractive index, the application range is 2-15 microns, visible light is not transmitted, and the transmittance of uncoated products is not high. Generally, an antireflection coating is required to increase the transmittance of the germanium window.
After the antireflection coating of the germanium Ge window, the common application spectral range is 3-5 microns and 8-14 microns.
The hardness of the germanium Ge window is higher than that of magnesium fluoride, and it can be used in the field of optoelectronics, infrared thermal imaging cameras, infrared laser systems, infrared optical instruments, in semiconductors, aerospace measurement and control, nuclear physics detection, optical fiber communications, infrared optics, solar cells, There are extensive and important applications in chemical catalysts, biomedicine and other fields.