Influence of two-photon absorption on modulational instability

Citation
En. Tsoy et al., Influence of two-photon absorption on modulational instability, J OPT SOC B, 18(8), 2001, pp. 1144-1149
Citations number
22
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Optics & Acoustics
Journal title
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
ISSN journal
07403224 → ACNP
Volume
18
Issue
8
Year of publication
2001
Pages
1144 - 1149
Database
ISI
SICI code
0740-3224(200108)18:8<1144:IOTAOM>2.0.ZU;2-V
Abstract
The instability of a plane wave in an optical medium with two-photon absorp tion is studied. The analysis is based on the modified nonlinear Schrodinge r equation. The linearized equation for the modulation is shown to have an exact solution in terms of confluent hypergeometric functions. It is found that the gain spectrum varies with position. This may result in a change of the wave dynamics and in a decrease of the repetition rate of the pulse tr ain developed from the plane wave. The application of the results to the op tical pulse propagation in semiconductor gratings and fiber gratings is dis cussed. (C) 2001 Optical Society of America.