Multiwave coupling in a high-gain photorefractive polymer.
The characteristics of a new high-gain photorefractive polymer composite with a PNP chromophore are investigated. Competition between beam fanning and two-wave coupling (TWC) is predicted and verified experimentally. The intensity dependence of TWC gain is studied. Higher diffraction order and forward phase conjugation in a TWC geometry are observed and explained.
Matsushita
K
K
Banerjee
P P
PP
Ozaki
S
S
Miyazaki
D
D