Asymmetric aberrational patterns at light beam self-action in nematic liquid crystals

V. N. Ochkin; M. P. Smayev; A. S. Zolot'ko; M. I. Barnik

doi:10.1117/12.752112

27 July 2007 Asymmetric aberrational patterns at light beam self-action in nematic liquid crystals

V. N. Ochkin, M. P. Smayev, A. S. Zolot'ko, M. I. Barnik

Proceedings Volume 6729, ICONO 2007: Coherent and Nonlinear Optical Phenomena; 67293E (2007) https://doi.org/10.1117/12.752112
Event: The International Conference on Coherent and Nonlinear Optics, 2007, Minsk, Belarus

Abstract

The orientational self-action of a light beam in (1) transparent planar nematic liquid crystal (NLC) subjected to external DC field and (2) planar NLC doped with stilbene dye in the absence of external field has been studied. It is shown that the shapes of the aberrational patterns developed in the far-field diffraction zone are highly asymmetric, unlike the common system of concentric rings. In case (1) the aberrational pattern exhibits complex dynamics of its formation. The shape of the pattern is independent of the polarization of the incident light. In case (2), the divergence of the pattern does depend on the incident-light polarization. In both cases, the light-induced director deformation in the field of the ordinary wave was found. The physical mechanisms of the director reorientation responsible for the asymmetric aberrational patterns are discussed.

Citation Download Citation

V. N. Ochkin, M. P. Smayev, A. S. Zolot'ko, and M. I. Barnik "Asymmetric aberrational patterns at light beam self-action in nematic liquid crystals", Proc. SPIE 6729, ICONO 2007: Coherent and Nonlinear Optical Phenomena, 67293E (27 July 2007); https://doi.org/10.1117/12.752112

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