High average power 1.5 microm eye-safe Raman shifting in BaWO4 crystals.
A nanosecond 1.3 microm Nd:YAG laser-pumped external cavity eye-safe Raman laser based on BaWO(4) crystal is efficiently demonstrated. The average power of 1.5 microm was 0.60 W operating at a pulse repetition rate of 1.7 kHz and an incident pump power of 4.14 W. Conversion efficiency of 14.5% and a high slope efficiency of 54.5% have been achieved. Pulse shortening was obviously observed. The pulse duration of the first Stokes was about 40 ns, much shorter than the fundamental pulse with a duration of approximately 220 ns.
Zong
Nan
N
Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Science, Beijing 100080, China. zongnan1018@163.com
Cui
Qian-jin
QJ
Ma
Qing-lei
QL
Zhang
Xiao-fu
XF
Lu
Yuan-fu
YF
Li
Cheng-ming
CM
Cui
Da-fu
DF
Xu
Zu-yan
ZY
Zhang
Huai-jin
HJ
Wang
Ji-yang
JY
D017609:Barium Compounds / Q000737:chemistry*; D003460:Crystallization / Q000379:methods*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005131:Eye Injuries / Q000517:prevention & control; D007834:Lasers; D013059:Spectrum Analysis, Raman / Q000295:instrumentation*
D017609:Barium Compounds