Composite lattice pattern formation in a wide-aperture thin-slice solid-state laser with imperfect reflective ends.
We observed self-formations of multiple lasing channels and two-dimensional lasing patterns consisting of composite local modes having different lasing frequencies in a laser-diode-pumped wide-aperture thin-slice solid-state laser with imperfect reflective end surfaces. Global patterns resembling higher-order Hermite-Gaussian modes or possessing N-fold rotational symmetries were experimentally shown to appear due to the standard polished surface roughness of closely spaced reflective ends and nonlinear modal interactions.
Otsuka
Kenju
K
Department of Human and Information Science, Tokai University, 1117 Kitakaname, Hiratsuka, Kanagawa 259-1292, Japan. ootsuka@keyaki.cc.tokai-u.ac.jp
Miyasaka
Yoshihiko
Y
Narita
Tatsuro
T
Chu
Shu-Chun
SC
Lin
Chi-Ching
CC
Ko
Jing-Yuan
JY