Wavelength stabilized laser has laser medium, which emits primary radiation, and folded external resonator having three resonator mirrors, one of which is designed as folding mirror

摘要

The wavelength stabilized laser (1) has a laser medium (2), which emits a primary radiation (P), and a folded external resonator (3) having three resonator mirrors (31,32,33), one of which is designed as a folding mirror. The folding mirror has an inner surface (4) facing the resonator and an outer surface (5) facing away from the resonator. Two detector elements are provided with the folding mirror to transmit a partial radiation of the primary radiation to the outer surface without reflection. An independent claim is included for a wavelength stabilization method for a laser.