Germanium optical windows are ideal for IR applications with its broad transmission range and opacity in the visible portion of the spectrum. Germanium (Ge) has high index of refraction, making it a perfect choice for applications that require low dispersion. Germanium is also commonly used in imaging system operating in the 2 µm to 12 µm spectral range. The AR coating provides high transmission from 2 µm to 16 µm while reducing the high surface reflectivity of the substrate. It is an excellent choice for optics used in low power CO2 laser applications.
