What Is a Dielectric Mirror?
A dielectric mirror is composed of multiple layers of dielectric thin films.
This type of mirror serves several key functions. In laser technology, it is used to reflect or transmit laser light. As an optical filter, it selectively reflects or transmits light at specific wavelengths. Additionally, due to its superior optical properties, it is used as a backlight in display technologies.
The manufacturing of dielectric mirrors commonly involves vacuum deposition and sputtering. Vacuum deposition is the process of evaporating dielectric materials in a vacuum to form thin films on a substrate. Sputtering, alternatively, deposits ionized dielectric materials onto a substrate.