Open AccessBeam spatial intensity modification based on stimulated Brillouin amplification
Author(s) -
Yue Wang,
Can Cui,
Zhiwei Lv,
Zhenxu Bai,
Yulei Wang,
Hang Yuan
Publication year - 2022
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.462032
Subject(s) - optics , laser beam quality , beam (structure) , laser , intensity (physics) , materials science , beam parameter product , brillouin scattering , brillouin zone , spatial light modulator , polarization (electrochemistry) , physics , laser beams , chemistry
The beam spatial intensity distribution is critical to laser applications both in the scientific and the industrial fields. Here, a method for beam spatial intensity modification based on stimulated Brillouin amplification (SBA) is proposed, which provides an alternative approach of laser beam shaping accompanied by efficient energy amplification. Three beam shaping schemes based on SBA has been demonstrated and evaluated in theoretical simulation and experiments with pulsed laser. The results indicate that the spatial distribution can be modified by manipulation of the beam polarization and the intensity. Finally, the shaped Stokes beam has been modified into the flat-top distribution with the output pulse energy increasing to 4.43 times of the input energy, proving the feasibility of SBA spatial shaping method.