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Optics Letters

Optics Letters


  • Vol. 28, Iss. 2 — Jan. 15, 2003
  • pp: 108–110

Observation of cancellation and second light-induced Fredericksz transition in nematic liquid crystals

Antonio De Luca, Sarik Nersisyan, and Cesare Umeton  »View Author Affiliations

Optics Letters, Vol. 28, Issue 2, pp. 108-110 (2003)

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We describe the observation of a new phenomenon: the cancellation of molecular reorientation that has been achieved in nematic liquid crystals acted on by two competing (pulsed) light beams. The effect is unstable: Starting from the cancellation condition, we have observed patterns related to the presence of a nonlinear phase shift in both beams when their intensity was increased simultaneously. We characterize the behavior of the induced phase shift as a function of the impinging power.

© 2003 Optical Society of America

OCIS Codes
(160.3710) Materials : Liquid crystals
(190.5530) Nonlinear optics : Pulse propagation and temporal solitons
(310.6860) Thin films : Thin films, optical properties

Antonio De Luca, Sarik Nersisyan, and Cesare Umeton, "Observation of cancellation and second light-induced Fredericksz transition in nematic liquid crystals," Opt. Lett. 28, 108-110 (2003)

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