A Novel 1,066 nm Nd:Gd0.69Y0.3NbO4 Passively Q-Switched Pulse-Burst Laser.

Authors :: Li, Xudong
Xu, Guichuan
Yan, Renpeng
Liu, Zhixiang
Wen, Xiaolin
Wu, Wentao
Ma, Yufei
Peng, Fang
Zhang, Qingli
Dou, Renqin
Zhou, Zhongxiang
Source :: Journal of Russian Laser Research; Nov2018, Vol. 39 Issue 6, p613-619, 7p
Publication Year :: 2018
Abstract: We demonstrate for the first time a Cr<superscript>4+</superscript>:YAG passively Q-switched 1066 nm pulse-burst laser under 879 nm direct pump with a novel Nd:Gd<subscript>0.69</subscript>Y<subscript>0.3</subscript>NbO<subscript>4</subscript> crystal. The output laser characteristics with different pump repetition rates and different Cr<superscript>4+</superscript>:YAG initial transmission are studied. Without the Cr<superscript>4+</superscript>:YAG, we obtain a maximum output energy of 2.55 mJ at an absorbed pump energy of 5.79 mJ with the highest 48% slope efficiency. The pulse-burst laser contains a maximum of 7 pulses for a Cr<superscript>4+</superscript>:YAG initial transmission of 55% and a pump repetition rate of 1 kHz. The single-pulse energy and narrowest pulse width reach 160 μJ and 5.5 ns at 38.2 kHz, with a peak power of 32 kW. [ABSTRACT FROM AUTHOR]