All-solid-state single-frequency tunable red laser

Abstract

The invention discloses an all-solid-state single-frequency tunable red laser. The all-solid-state single-frequency tunable red laser comprises a laser diode, a pumping light shaping system, a resonant cavity, a gain medium, a frequency doubling crystal, a magneto-optical isolator and a frequency tuning device, wherein the laser diode is connected with the pumping light shaping system by virtue of optical fibers, light spots shaped by the pumping light shaping system are longitudinally pumped onto the gain medium, and fluorescence, excited with an infrared band, of the gain medium enters the resonant cavity. With the adoption of the all-solid-state single-frequency tunable red laser, the frequency continuous regulation of a 671nm red light is realized by the matching of an F-P etalon and piezoelectric ceramic, wherein the F-P etalon is used for crude regulation, and the piezoelectric ceramic is used for fine regulation; compared with a traditional 808nm pumping source, a 880nm pumping source adopted by the laser has the advantages that thermal lens effect of the crystal can be effectively reduced, and the conversion efficiency of the laser is improved; as the laser is in an annular cavity structure, the running is efficient and stable.

Description

technical field [0001] The invention belongs to a red light laser, in particular to an all-solid-state single-frequency tunable red light laser. Background technique [0002] Laser diode (LD) end-pumped solid-state lasers have received widespread attention in recent years. It has the advantages of high efficiency, compact structure, stable performance, long life and full curing. It is widely used in lidar, spectral analysis, gravitational wave detection, and coherent communication. and quantum optics. [0003] In general applications, 808nm optical pumping is the most common type of laser diode end pumping, and using 880nm laser as pumping light can directly pump particles to the upper energy level of the laser, reducing the number of particles without radiation transitions , to reduce the energy loss caused by quantum defects, thereby effectively reducing the heat load of the laser medium. [0004] At present, there are many studies on single-frequency lasers in the prior...

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