标题：Efficient tunable multi-wavelength CW Nd:GGG laser at 1.06 and 1.4 μm regions
作者：Chu, Hongwei ;Li, Yufei ;Li, Dechun ;Zhao, Shengzhi ;Yang, Kejian ;Li, Guiqiu ;Zhao, Jia ;Qiao, Wenchao ;Li, Tao
作者机构：[Chu, Hongwei ;Li, Yufei ;Li, Dechun ;Zhao, Shengzhi ;Yang, Kejian ;Li, Guiqiu ;Zhao, Jia ;Qiao, Wenchao ;Li, Tao ] School of Information Science and 更多
摘要：We demonstrat a diode-pumped, efficient tunable multi-wavelength CW Nd:GGG laser simultaneously oscillated at 1.06 and 1.4 μm optical region for the first time. Besides an output power of 1.31 W at 1.06 μm, a maximum output power of 226 mW at 1.4 μm region is obtained under a diode pump power of 6.52 W. The corresponding slope efficiency and diode-to-optical conversion efficiency are 4.73% and 3.47%, respectively. By using a quartz plate as frequency filter, the laser around 1.4 μm can be tuned in the range from 1407.6 to 1436.8 nm, indicating that Nd:GGG laser at 1.4 μm region is a promising candidate for femtosecond pulse generation. The M2factor of the Nd:GGG laser beam at 1.4 μm is measured to be 1.21 and 1.23 in x- and y-direction, respectively. By adjusting the tilt angle, the stable multi-wavelength operation with comparable intensity can be obtained. © 2014 Published by Elsevier B.V.