A automatic thickness gauge frequency multiplication UV laser in upconversion intracavity is characterized by that: double end surfaces of frequency up conversion nonlinearity laser crystal are cut perpendicular to the direction phase matching with frequency multiplication principal wave laser and form solid laser with relevant coating film ,in which , infrared light is utilized to pump output ultraviolet laser. The device is consisted of a piece of crystalloid and a pair of laser cavity mirror, and provides a simple and compact structure as well as high stability and reliability. |