How much do you know about the dielectric HR mirror?

Dielectric HR mirrors refer to coating layers of dielectric films on optical substrates, and are designed to achieve the highest possible reflectance, usually at specific wavelengths. Although engineered for best performance at normal (0) or 45 degrees angles-of-incidence, these coatings can be tailored for most any angle. Specially Dielectric HR Mirrors are suitable for the application of laser resonator cavity and return of light path.

These dielectric HR mirrors are highly efficient over a broad wavelength range. Both bragg mirror, where all optical layer thickness values are just one-quarter of the design wavelength, and more complicated multilayer structure designs are used to obtain desired reflection. Dielectric coated HR mirrors are durable and will withstand repeated cleaning.

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