Abstract

We investigate the formation of square, rectangular or squeezed hexagonal patterns in a photorefraetive single-feedback experiment. Although in general, hexagonal patterns are predominantly excited in these systems, non-hexagonal patterns may be stable in a certain range of the propagation length. Moreover, a coexistence of two hexagons with two different transverse scales is found and explained by the results of a linear stability analysis. To achieve control of these patterns, we introduce a two-arm feedback system with a Fourier filter in one arm and present results on the stabilization of roll and square pattern in a parameter region where the hexagonal pattern is the only output without control.

© 1999 Optical Society of America

PDF Article
More Like This
Time-resolved formation and incoherent interaction of photorefraetive screening solitons

Cornelia Denz, Jürgen Petter, Carsten Weilnau, and Wieslaw Krolikowski
SDPF9 Advances in Photorefractive Materials, Effects and Devices (APMED) 1999

Spatial solitons in a single-mirror feedback system

B. Schäpers, M. Feldmann, T. Ackemann, and W. Lange
WC1 Nonlinear Guided Waves and Their Applications (NLGW) 1999

Vortex-induced pattern dynamics in a feedback system

N. Marsal, V. Caullet, D. Wolfersberger, and M. Sciamanna
NTh2A.2 Nonlinear Optics (NLO) 2013

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription