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Updated: May 16, 2026

An Electrochemical Cholesteric Liquid Crystalline Device for Quick and Low-Voltage Color Modulation
Published on: February 27, 2019
Phase conjugation and slow light in dye-doped chiral nematics
D Wei1, S Residori, U Bortolozzo
1Institut Non Linéaire de Nice (INLN), Université de Nice-Sophia Antipolis, Centre National de la Recherche Scientifique (CNRS), 1361 Route des Lucioles, Valbonne 06560, France.
Abstract:
Optical phase conjugation and slow light are obtained in dye-doped chiral nematics via degenerate four-wave mixing. The creation of the light-induced dynamical grating is described and the amplitude of the phase-conjugate wave is shown to follow the changes of the input signal, hence providing efficient distortion correction. Associated to these capabilities, slowing down of light pulses is obtained thanks to the dispersive properties of the wave mixing occurring in the cholesteric liquid crystals, opening the way to applications in interferometry and imaging through highly scattering media.
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