Laser device has amplifier medium for transmitting laser beam of intermediate wavelength for pumping three level amplifier medium, where amplifier media are provided inside laser cavity

摘要

A laser device (4) has a three-level amplifier medium (6) for transmitting an output laser beam with an output wavelength (lambda s). Another amplifier medium (7) transmits a laser beam of intermediate wavelength for pumping the three-level amplifier medium (6). The amplifier media are provided inside a monolithic linear resonant-type laser cavity closed by maximal reflection mirrors (8, 9) with an intermediate wavelength, where the cavity is a base for output wavelength and intermediate wavelength.