Dynamics of transverse waves and zigzag instabilities in photorefractive two-wave mixing with a feedback mirror

O. Sandfuchs*, F. Kaiser, M. R. Belić

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

We report on the appearance of running transverse waves and zigzag instabilities in photorefractive counterpropagating two-wave mixing with a single external feedback mirror. These secondary structures are caused by the sluggish temporal response of the crystal through the buildup of a reflection grating. We derive a Landau-type equation for the critical mode amplitude above the primary instability threshold and compare it with the results from numerical simulations in the case of low and high optical aspect ratios. The effect of intensity-dependent relaxation time on the formation of the spatiotemporal structures is discussed.

Original languageEnglish
Pages (from-to)505-514
Number of pages10
JournalJournal of the Optical Society of America B: Optical Physics
Volume18
Issue number4
DOIs
Publication statusPublished - Apr 2001
Externally publishedYes

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