Open AccessNd:YAG ceramic laser obtained high slope-efficiency of 62% in high power applications
Author(s) -
Yunfeng Qi,
Xiaolei Zhu,
Qihong Lou,
Jianghua Ji,
Junping Dong,
Yunrong Wei
Publication year - 2005
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/opex.13.008725
Subject(s) - materials science , laser , slope efficiency , optics , ceramic , energy conversion efficiency , laser power scaling , optoelectronics , diode pumped solid state laser , diode , laser pumping , fiber laser , composite material , physics
By using quite uniformly nine-stacks side-around arranged compact pumping system, a high power Nd:YAG ceramic quasi-CW laser with high slope efficiency of 62% has been demonstrated. With 450 W quasi-CW stacked laser diode bars pumping at 808 nm, performance of the Nd:YAG ceramic laser with different output coupling mirrors has been investigated. Optimum output power of 236 W at 1064 nm was obtained and corresponding optical-to-optical conversion efficiency was as high as 52.5%. The laser system operated quite stably and no saturation phenomena have been observed, which means higher output laser power could be obtained if injecting higher pumping power. The still-evolving Nd:YAG ceramics are potential super excellent media for high power practical laser applications.