Open AccessDual-loss-modulated Q-switched and mode-locked YVO_4/Nd:YVO_4/KTP green laser with EO and Cr^4+:YAG saturable absorber
Author(s) -
Tao Li,
Shengzhi Zhao,
Zhuo Zhuang,
Kejian Yang,
Guiqiu Li,
Dechun Li
Publication year - 2010
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.18.010315
Subject(s) - materials science , laser , optics , saturable absorption , pulse width modulation , q switching , pulse (music) , nd:yag laser , optoelectronics , power (physics) , fiber laser , physics , detector , quantum mechanics
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.