Highly efficient diode-stack, end-pumped Nd:YAG slab laser with symmetrized beam quality

被引：14
|
作者：
Liao, Y
Du, KM
Falter, S
Zhang, J
Quade, M
Loosen, P
Poprawe, R
机构：
[1] Fraunhofer Institut fü r Lasertechnik, Aachen, 52074
[2] Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Science, Shanghai
[3] Department of Modern Applied Physics, Tsinghua University, Beijing
来源：
APPLIED OPTICS | 1997年 / 36卷 / 24期
关键词：
slab laser; diode end pumping; polarization; beam shaping;
D O I：
10.1364/AO.36.005872
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
An efficient high-power cw Nd:YAG slab laser, partially end pumped by diode-laser stacks, and a novel beam-shaping technique are reported. The optical efficiency amounted to 44%, and the slope efficiency amounted to 55%. Introducing an intracavity Brewster plate to polarize the laser beam, we obtained an optical efficiency of 35% and a slope efficiency of 41%. The output beam was rectangular and the beam quality asymmetric in two orthogonal directions. To equalize the beam quality, we introduced a step-mirror beam-shaping technique. The beam-shaping technique and the results obtained are discussed. (C) 1997 Optical Society of America.
引用
收藏
页码：5872 / 5875
页数：4
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