標題: | Efficient high-pulse-energy eye-safe laser generated by an intracavity Nd:YLF/KTP optical parametric oscillator: role of thermally induced polarization switching |
作者: | Huang, Y. J. Tang, C. Y. Huang, Y. P. Cho, C. Y. Su, K. W. Chen, Y. F. 電子物理學系 Department of Electrophysics |
關鍵字: | Nd:YLF;intracavity OPO;thermal effects;polarization switching |
公開日期: | 2012 |
摘要: | A high-pulse-energy eye-safe laser at 1552 nm is effectually generated by an intracavity Nd:YLF/KTP optical parametric oscillator (OPO) with the help of the thermally induced polarization switching. The polarization characteristics of the c-cut Nd:YLF laser at 1053 nm in the continuous-wave (CW) and Q-switched operation are comprehensively investigated. We experimentally verify the thermally induced birefringence can lead to a polarization switching between the mutually orthogonal components of the fundamental pulses. Consequently, an efficient intracavity nonlinear frequency conversion can be achieved in an optically isotropic laser crystal without any additional polarization control. With this finding, the pulse energy and peak power of the compact Nd: YLF/KTP eye-safe laser under an incident pump power of 12.7 W and a pulse repetition rate of 5 kHz are up to 306 mu J and 4 kW, respectively. |
URI: | http://hdl.handle.net/11536/16979 http://dx.doi.org/10.7452/lapl.201210071 |
ISSN: | 1612-2011 |
DOI: | 10.7452/lapl.201210071 |
期刊: | LASER PHYSICS LETTERS |
Volume: | 9 |
Issue: | 10 |
起始頁: | 709 |
結束頁: | 715 |
顯示於類別: | 期刊論文 |