Title :
Transverse-mode instability in high power fiber amplifiers involving thermally-induced gratings without frequency offset
Author :
I-Ning Hu ; Galvanauskas, A.
Author_Institution :
Center for Ultrafast Opt. Sci., Univ. of Michigan, Ann Arbor, MI, USA
Abstract :
Time-dependent coupled-mode theory predicts transverse-mode instabilities in high power fiber amplifiers originating from thermally-induced gratings possessing a spatial phase shift with respect to a beating pattern of two transversal modes of the same frequency.
Keywords :
coupled mode analysis; diffraction gratings; laser beams; laser modes; multiwave mixing; optical fibre amplifiers; thermo-optical devices; beating pattern; high power fiber amplifiers; spatial phase shift; thermally-induced gratings; time-dependent coupled-mode theory; transversal modes; transverse-mode instability; Fiber gratings; Gratings; Mathematical model; Numerical models; Optical fiber amplifiers; Optical fiber theory; Time-frequency analysis;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2014 Conference on
Conference_Location :
San Jose, CA
