摘要
We report on a radially polarized and passively Q-switched Nd：YAG/Cr^4＋：YAG laser. The bulk Nd：YAG crystal is bonded with two undoped YAG crystal end caps to weaken the thermal lens effect and thus, enhance the extraction of stored energy in the bulk gain material. In the absence of active water cooling, the average laser power reaches 383 mW with 33% slope efficiency, and the laser pulse achieves 1.457-W peak power, 18.9-ns duration, and 13.9-kHz repetition rate with 97.6% polarization purity.
We report on a radially polarized and passively Q-switched Nd：YAG/Cr^4＋：YAG laser. The bulk Nd：YAG crystal is bonded with two undoped YAG crystal end caps to weaken the thermal lens effect and thus, enhance the extraction of stored energy in the bulk gain material. In the absence of active water cooling, the average laser power reaches 383 mW with 33% slope efficiency, and the laser pulse achieves 1.457-W peak power, 18.9-ns duration, and 13.9-kHz repetition rate with 97.6% polarization purity.
基金
supported by the National Natural Science Foundation of China(No.60978025)
the Hundred Talents Program of CAS,and the Shanghai Pujiang Program(No.09PJ1410500)
