ABERRATIONAL PATTERN DURING THE SELF-ACTION OF THE ТЕМ01 MODE OF LIGHT RADIATION IN NEMATIC LIQUID CRYSTALS

• Published in: Bulletin of the Lebedev Physics Institute Vol. 47; no. 5; pp. 149 - 155
• Main Authors: Budagovsky, I. A., Zolot’ko, A. S., Kuznetsov, A. A., Smayev, M. P., Shvetsov, S. A., Bobrovsky, A. Yu, Boiko, N. I., Shibayev, V. P.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-05-2020; Springer Nature B.V
• Subjects: Aberration; Far fields; Liquid crystals; Luminous intensity; Nematic crystals; Phase shift; Physics; Physics and Astronomy; self-focusing; optical nonlinearity; nematic liquid crystals; liquid-crystal polymers; self-defocusing; light self-action; aberrational pattern
• ISSN: 1068-3356; 1934-838X
• DOI: 10.3103/S1068335620050024

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The properties of the aberrational pattern resulting from the self-action of the light radiation mode TEM
01
in liquid-crystal systems are studied. It is found that the interference of light rays corresponding to two peaks of intensity and nonlinear phase shift leads to the formation of a system of fringes in the Fraunhofer region; their angular period is controlled by the distance between peaks. These fringes fill the entire aberrational pattern (concentric ring pattern) or only its part, depending on the type of the profile of the light-induced phase shift. The possibilities of using the properties of the aberrational pattern in the TEM
01
mode for studying the light-induced reorientation of the nematic liquid crystal director are shown.