采用电光和Cr(4+)∶YAG可饱和吸收体的双损耗调制调Q和锁模YVO(4)/Nd∶YVO(4)/KTP绿光激光器

Dual-loss-modulated Q-switched and mode-locked YVO(4)/Nd:YVO(4)/KTP green laser with EO and Cr(4+):YAG saturable absorber.

作者信息

Li Tao, Zhao Shengzhi, Zhuo Zhuang, Yang Kejian, Li Guiqiu, Li Dechun

机构信息

College of Information Science and Engineering, Shandong University, Jinan, Shandong 250100, China.

出版信息

Opt Express. 2010 May 10;18(10):10315-22. doi: 10.1364/OE.18.010315.

DOI:10.1364/OE.18.010315

PMID:20588886

Abstract

By simultaneously employing the electro-optic (EO) modulator and Cr(4+):YAG saturable absorber, a diode-pumped dual-loss-modulated Q-switched and mode-locked (QML) YVO(4)/NdYVO(4)/KTP green laser is presented. In comparison with the singly passively QML green laser with Cr(4+):YAG, the dual-loss-modulated QML green laser with EO and Cr(4+):YAG can generate more stable pulse train with deeper modulation depth, shorter pulse width, greater pulse energy and higher peak power. For the dual-loss-modulated QML green laser, at a pump power of 18 W and a repetition rate of 1 kHz, the pulse width and the pulse energy of the Q-switch envelope as well as the peak power of QML green laser are 42.1 ns, 360 microJ and 382 kW, respectively, corresponding to the pulse width compression 62%, the pulse energy improvement 10 times and the QML peak power increase 40 times when compared with that of the singly passively QML green laser.

摘要

通过同时使用电光（EO）调制器和Cr(4+):YAG可饱和吸收体，展示了一种二极管泵浦的双损耗调制调Q锁模（QML）YVO(4)/NdYVO(4)/KTP绿光激光器。与采用Cr(4+):YAG的单被动QML绿光激光器相比，采用EO和Cr(4+):YAG的双损耗调制QML绿光激光器能够产生更稳定的脉冲序列，具有更深的调制深度、更短的脉冲宽度、更大的脉冲能量和更高的峰值功率。对于双损耗调制QML绿光激光器，在泵浦功率为18 W、重复频率为1 kHz时，Q开关包络的脉冲宽度和脉冲能量以及QML绿光激光器的峰值功率分别为42.1 ns、360 μJ和382 kW，与单被动QML绿光激光器相比，脉冲宽度压缩了62%，脉冲能量提高了10倍，QML峰值功率增加了40倍。