Switching of self-organized patterns in mutually modulating liquid crystal devices for beam control

Iino, Yoshiki; Davis, Peter

doi:10.1063/1.369696

Cited by 5 publications

(1 citation statement)

References 18 publications

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“…3, the third term of Eq. 9 is a strongly nonlinear function of V and ϕ, and the nonlinearity has been recognized by many previous studies experimentally [15,17,40]. When we applied the noise to the voltage V , the effect of the noise by the third term depends on the state V and ϕ of the system, and its dependence on ϕ makes it a multiplicative noise.…”

Section: Resultsmentioning

confidence: 92%

Observation of stochastic resonance in a liquid-crystal light valve with optical feedback induced by colored noise in the driving voltage

et al. 2020

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Stochastic resonance is a noise phenomenon that benefits applications such as pattern formation, neural systems, microelectromechanical systems, and image processing. This study experimentally clarifies that the orientation of the liquid crystal molecules was switched between two stable positions when stochastic resonance was induced by colored noises in a liquid crystal light valve with optical feedback. Ornstein-Uhlenbeck and dichotomous noises were used for colored noise, and the noise was applied to the drive voltage of the liquid crystal light valve. The signal-to-noise ratio was measured with respect to changes in the noise type, noise intensity, and autocorrelation time of the noise. It was found that typical stochastic resonance was observed with a noise autocorrelation time of approximately 20 ms or more for both noise types, and dichotomous noise further enhanced the stochastic resonance compared to the Ornstein-Uhlenbeck noise. This suggests that it is possible to maximize stochastic resonance in a liquid crystal light valve by optimizing the conditions of colored noise.

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Section: Resultsmentioning

confidence: 92%

Observation of stochastic resonance in a liquid-crystal light valve with optical feedback induced by colored noise in the driving voltage

et al. 2020

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Image analysis for the destabilization process of the petal pattern in a liquid crystal light valve with rotational optical feedback

Nagaya

Nara

Residori³

2009

Physica D: Nonlinear Phenomena

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Controlling spontaneous generation of optical beam spots in a liquid crystal device

Iino¹,

Davis²

2000

Journal of Applied Physics

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An analysis is made of spot patterns generated in a liquid crystal spatial light modulator with optical feedback from the point of view of controlling generation of spots. The conditions for forming solitary spots were analyzed using a theoretical model which fits the experimental device well. Phenomena observed in experiments such as spontaneous birth, motion, and merging of spots is reproduced in numerical simulation with the model. It is shown how parameters characterizing nonlinearity, diffraction, and diffusion can be designed for stable spots and stable spot motion.

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Switching of self-organized patterns in mutually modulating liquid crystal devices for beam control

Cited by 5 publications

References 18 publications

Observation of stochastic resonance in a liquid-crystal light valve with optical feedback induced by colored noise in the driving voltage

Observation of stochastic resonance in a liquid-crystal light valve with optical feedback induced by colored noise in the driving voltage

Image analysis for the destabilization process of the petal pattern in a liquid crystal light valve with rotational optical feedback

Controlling spontaneous generation of optical beam spots in a liquid crystal device

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