Q-switched mode-locked diode-side-pumped composite crystal;
green laser;
GREEN LASER;
SATURABLE ABSORBER;
RAMAN LASER;
LOCKING;
CR4+-YAG;
SESAM;
D O I:
10.1007/s10946-013-9389-9
中图分类号:
O43 [光学];
学科分类号:
070207 ;
0803 ;
摘要:
We present a diode-side-pumped Q-switched mode-locked (QML) laser operating at 532 nm for the first time employing a composite crystal Nd:YAG/Cr4+:YAG/YAG and a KTP. The experimental results show that, using a suitable cavity and crystals, one can obtain high-quality QML laser output at 532 nm with a side-pumped system. We measure and analyze the QML performance of the fundamental frequency laser and the green laser. Under a pump power of 127 W, we obtain a QML laser operating at 532 nm with an average power of 4.97 W and a repetition rate of 0.2 GHz for the mode-locked pulses; the corresponding depth of modulation is close to 100%.