Control and generation of drifting patterns by asymmetrical Fourier filtering.
basic_science · Level V
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- Record sourced from PubMed, PMID 26871008.
- Also identified by DOI 10.1103/PhysRevE.93.010201.
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Abstract
We report the theoretical and experimental demonstration of one-dimensional drifting patterns generated by asymmetrical Fourier filtering in the transverse plane of an optical feedback system with a Kerr type nonlinearity. We show, with good agreement between our theoretical (analytics and numerics) calculations and experimental observations that at the primary instability threshold the group velocity is always different from zero. Consequently, the system is convective at this threshold, then exhibits drifting patterns.