Open AccessEnhancement of the beam quality of non-uniform output slab laser amplifier with a 39-actuator rectangular piezoelectric deformable mirror
Author(s) -
Ping Yang,
Yu Ning,
Xiang Lei,
Bing Xu,
Xinyang Li,
Lizhi Dong,
Hu Yan,
Wenjing Liu,
Wenhan Jiang,
Lei Liu,
Chao Wang,
Xiaoyan Liang,
Xinde Tang
Publication year - 2010
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.18.007121
Subject(s) - optics , deformable mirror , amplifier , laser beam quality , actuator , beam (structure) , slab , diffraction , laser , power (physics) , physics , piezoelectricity , wavefront , materials science , acoustics , laser beams , optoelectronics , electrical engineering , engineering , cmos , quantum mechanics , geophysics
We present a slab laser amplifier beam cleanup experimental system based on a 39-actuator rectangular piezoelectric deformable mirror. Rather than use a wave-front sensor to measure distortions in the wave-front and then apply a conjugation wave-front for compensating them, the system uses a Stochastic Parallel Gradient Descent algorithm to maximize the power contained within a far-field designated bucket. Experimental results demonstrate that at the output power of 335W, more than 30% energy concentrates in the 1x diffraction-limited area while the beam quality is enhanced greatly.