標題: > 100-kW linearly polarized pulse fiber amplifier seeded by a compact efficient passively Q-switched Nd:YVO4 Laser
作者: Zhuang, W. Z.
Huang, W. C.
Cho, C. Y.
Huang, Y. P.
Huang, J. Y.
Chen, Y. F.
電子物理學系
Department of Electrophysics
公開日期: 1-十一月-2012
摘要: We thoroughly develop compact high-peak-power Nd:YVO4/Cr4+:YAG passively Q-switched lasers (PQS) as the seed source of the fiber amplifier. We exploit a nearly hemispherical cavity to reach the second threshold criterion and systematically consider the thermal lensing effect and the mode-size matching in the overall optimization. Employing a Cr4+:YAG absorber with 70% initial transmission, we obtain a 50-kHz seed pulse train with the pulse duration of 4.8 ns and the pulse energy of 22 mu J at a pump power of 5.4 W. Injecting this seed laser into a polarization maintained Yb-doped fiber, the pulse energy and peak power at a pump power of 16 W are enhanced up to 178 mu J and 37 kW, respectively. We also use an absorber with 40% initial transmission to generate a 25 kHz pulse train with the pulse duration of 1.6 ns and the pulse energy of 36 mu J at a pump power of 5.4 W. With this seed laser, we find that the surface damage of the fiber limits the maximum pulse energy and peak power to be 192 mu J and 120 kW, respectively.
URI: http://dx.doi.org/10.1134/S1054660X12110205
http://hdl.handle.net/11536/20412
ISSN: 1054-660X
DOI: 10.1134/S1054660X12110205
期刊: LASER PHYSICS
Volume: 22
Issue: 11
起始頁: 1721
結束頁: 1728
顯示於類別:期刊論文


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  1. 000310467100014.pdf