Uncoated metals such as copper and gold have excellent broad reflectivity in the infra red, and useful reflectivity in the visible as well.

There are occasions when even tiny losses are a problem (such as in laser cavities), and an enhanced coating is needed. A series of thin film high and low refractive index materials are deposited onto the mirror in a vacuum chamber. This can boost the reflectivity at the specified wavelength to greater than 99.9%. Such high reflectivities need sophisticated calorimetric measurement to ensure specifications are met.

We offer enhanced metal reflectors for standard wavelengths such as 10.6 microns. Other coating properties such as those with polarisation sensitivity, or dual wavelength operation are possible.

Our MaxR coating offers excellent resistance to the darkening effect of UV radiation in laser discharges. MaxR coating is available on either copper or silicon substrate mirrors. Water cooling is recommended for resonator mirrors, and copper is the material of choice