Efficient Ho:LuLiF4 laser diode-pumped at 1.15 μm.
We report the first laser operation based on Ho(3+)-doped LuLiF(4) single crystal, which is directly pumped with 1.15-μm laser diode (LD). Based on the numerical model, it is found that the "two-for-one" effect induced by the cross-relaxation plays an important role for the laser efficiency. The maximum continuous wave (CW) output power of 1.4 W is produced with a beam propagation factor of M(2) ~2 at the lasing wavelength of 2.066 μm. The slope efficiency of 29% with respect to absorbed power is obtained.
Key Laboratory for Laser Plasmas, Ministry of Education and Department of Physics, Shanghai JiaoTong University, Shanghai 200240, China.
Sheng-Li
SL
Wang
Chong-Yuan
CY
Huang
Cheng-Chun
CC
Zhao
Hong-Qiang
HQ
Li
Yu-Long
YL
Tang
Nan
N
Yang
Shuai-Yi
SY
Zhang
Yin
Y
Hang
Jian-Qiu
JQ
Xu
D004735:Energy Transfer; D004867:Equipment Design; D019544:Equipment Failure Analysis; D053844:Lasers, Solid-State