Open AccessLaser beam addition of planar waveguides with fractional self-imaging
Author(s) -
Xiao Ling,
Cheng Xiao-Jin,
XU Jianqiu
Publication year - 2009
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.58.3870
Subject(s) - planar , optics , laser , laser beam quality , beam (structure) , materials science , beam parameter product , self focusing , beam diameter , waveguide , laser beams , m squared , phase (matter) , laser power scaling , physics , computer science , computer graphics (images) , quantum mechanics
Propagation characteristics of laser beams are examined in fractional self-imaging planar waveguides. A potential approach to laser beam combining is proposed by application of planar waveguides with fractional self-imaging. The influences of phase mismatch between laser beams on laser beam addition are discussed. The numerical simulation for two lasers with average power of 300 W shows that the beam addition in fractional self-imaging planar waveguide can improve the parameter M2 of combined beam effectively. The sensitivity of beam addition to the phase mismatch between laser beams has been reduced obviously.