Controlling Spatio-Temporal Chaos In A Nonlinear Optical System By Fourier Space Filtering
STOCHASTIC DYNAMICS AND PATTERN FORMATION IN BIOLOGICAL AND COMPLEX SYSTEMS(2000)
摘要
We present an experimental and numerical study on the selection of unstable patterns embedded in a nonlinear optical system in weakly or strongly turbulent states by Fourier space filtering. This is implemented on a liquid crystal light valve showing abundant stationary and dynamic patterns. We drive the system into weak or strong turbulence and then control them into stationary or nonstationary patterns. The various target patterns can be easily achieved by the simple filter of pinhole type in the Fourier space.
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关键词
control of chaos,spatial filtering,optical feedback,optical filters,nonlinear optics,stochastic process,liquid crystal,pattern recognition,fourier transform
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