title: 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.
abstract: 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.
authors.affiliation: State Key Laboratory of Tribology, Center for Photonics and Electronics, Department of Precision Instruments,Tsinghua University, Beijing 100084, China.
authors.forename: Xingpeng
authors.initials: X
authors.lastname: Yan
authors.forename: Qiang
authors.initials: Q
authors.lastname: Liu
authors.forename: Xing
authors.initials: X
authors.lastname: Fu
authors.forename: Hailong
authors.initials: H
authors.lastname: Chen
authors.forename: Dongsheng
authors.initials: D
authors.lastname: Wang
authors.forename: Mali
authors.initials: M
authors.lastname: Gong