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High Power Single-Frequency and Frequency-Doubled Laser With Active Compensation for the Thermal Lens Effect of Terbium Gallium Garnet Crystal

Qiwei Yin, Huadong Lu, Jing Su, Kunchi Peng

Opt Lett. 2016 May 1;41(9):2033-6.

PMID: 27128067

Abstract:

The thermal lens effect of terbium gallium garnet (TGG) crystal in a high power single-frequency laser severely limits the output power and the beam quality of the laser. By inserting a potassium dideuterium phosphate (DKDP) slice with negative thermo-optical coefficient into the laser resonator, the harmful influence of the thermal lens effect of the TGG crystal can be effectively mitigated. Using this method, the stable range of the laser is broadened, the bistability phenomenon of the laser during the process of changing the pump power is completely eliminated, the highest output power of an all-solid-state continuous-wave intracavity-frequency-doubling single-frequency laser at 532 nm is enhanced to 30.2 W, and the beam quality of the laser is significantly improved.

Chemicals Related in the Paper:

Catalog Number Product Name Structure CAS Number Price
AP13761790 Potassium dideuterium phosphate Potassium dideuterium phosphate 13761-79-0 Price
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