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Appl Opt. 2010 Aug 1;49(22):4131-8. doi: 10.1364/AO.49.004131.

Comparative investigation on performance of acousto-optically Q-switched dual-rod Nd:YAG-Nd:YVO(4) laser and dual-rod Nd:YVO(4)-Nd:YVO(4) laser.

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  • 1State Key Laboratory of Tribology, Center for Photonics and Electronics, Department of Precision Instruments,Tsinghua University, Beijing 100084, China.


We demonstrated an acousto-optically (AO) Q-switched dual-rod laser with different gain crystals in the cavity, the combination of Nd:YAG crystal and Nd:YVO(4) crystal. An AO Q-switched dual-rod Nd:YVO(4)-Nd:YVO(4) laser was also configured for comparative investigation. A 69 and 75?W near diffraction-limited laser in CW operation was obtained for the dual-rod Nd:YAG-Nd:YVO(4) laser and dual-rod Nd:YVO(4)-Nd:YVO(4) laser, respectively. In the Q-switched operation, 500?kHz output with 64.2?W average power and 650?kHz laser with 73.2?W average power was achieved for the Nd:YAG-Nd:YVO(4) laser and Nd:YVO(4)-Nd:YVO(4) laser, respectively. The detailed comparison on the performance of pulse duration, pulse repetition rate, output power, and optical spectrum was also investigated and discussed.

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