Spatio-temporal light structures in a chain of bistable two-level medium thin films

✍ Scribed by Yu.A. Logvin; A.M. Samson; V.M. Volkov

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 482 KB
• Volume: 4
• Category: Article
• ISSN: 0960-0779
• DOI: 10.1016/0960-0779(94)90090-6

✦ Synopsis

The light transmission through a system of bistable thin films of two-level atoms (centres) is considered. In the limit of an inertialess two-level medium, the problem is reduced to a nonlinear infinite-dimension mapping. It is shown that self-pulsation regimes occur when the incident light intensity is not enough to switch all bistable elements into the upper state. For the Gaussian incident beam. spatio-temporal light structures are studied. The structure of the transverse profile of the light beam depends to a large extent on the strength of diffraction, the increase of which leads to formation of smoother profiles, and regimes with a shorter period. Multistability of spatial structures is also investigated. *Also at the Division for Optical Problems in Information Technologies, Belarusian Academy of Sciences.