Europhys. Lett.
Volume 63, Number 4, August 2003
Page(s) 531 - 537
Section Electromagnetism, optics, acoustics, heat transfer, classical mechanics, and fluid dynamics
Published online 01 November 2003
DOI: 10.1209/epl/i2003-00558-3
Europhys. Lett., 63 (4) , pp. 531-537 (2003)

Optical localised structures and their dynamics

S. Residori1, T. Nagaya2 and A. Petrossian3

1  Institut Non Linéaire de Nice, UMR 6618 CNRS-UNSA 1361 Route des lucioles, 06560 Valbonne-Sophia Antipolis, France
2  Department of Electrical and Electronic Engineering, Okayama University Okayama 700-8530, Japan
3  Yerevan StateUniversity - 1 Manoogian Street, 375049 Yerevan, Armenia

(Received 7 April 2003; accepted in final form 11 June 2003)

When bistability and diffraction are simultaneously present, a Liquid-Crystal-Light-Valve with optical feedback shows the appearance of localised structures. We report here new features of their dynamics, such as their appearance on successive and concentric rings and their motion along the rings. Radial and azimuthal dynamics are presented and discussed.

42.65.Sf - Dynamics of nonlinear optical systems; optical instabilities, optical chaos and complexity, and optical spatio-temporal dynamics.
47.54.+r - Pattern selection; pattern formation.

© EDP Sciences 2003