Open AccessThreshold of stimulated Brillouin scattering pumped by a multi-longitudinal mode laser
Author(s) -
Lin Dian-Yang,
H. Gao,
Shuangyi Wang,
Xiaocun Jiang,
Zhiwei Lü
Publication year - 2005
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.54.4151
Subject(s) - laser linewidth , brillouin scattering , laser , optics , brillouin zone , longitudinal mode , physics , materials science , scattering , coherence length , coherence (philosophical gambling strategy) , quantum mechanics , superconductivity
On the basis of the multi-longitude theory of stimulated Brillouin scattering (S BS), a group of coupling wave equations without limitation to the mode separatio n of a laser was deduced while the random initial phases of the multi-longitudin al modes were introduced for SBS pumped by a free-operating laser. The dependenc es of broadband SBS threshold on the bandwidth of the laser, the number of the l aser modes, the mode separation of the laser, the linewidth of Brillouin, and th e ratio of the SBS interaction length to the laser coherence length were discuss ed in detail. And the theoretical results were consistent with the experimental results reported.