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Measurement and analysis of reversible transformations of vortex-free and singular light fields produced by PDLC cells

Measurement and analysis of reversible transformations of vortex-free and singular light fields produced by PDLC cells

In this work, we have firstly realized and investigated reversible transformations of vortex-free and singular optical complex landscapes appearing in a He-Ne laser beam transmitted through a PDLC cell, which is controlled by an applied DC voltage. Biaxes of all micro size LC domains are oriented...

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Main Authors: Ponevchinsky, V.V., Vasil’ev, V.I., Soskin, M.S.
Format: Article
Language:English
Published: Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України 2009
Series:Semiconductor Physics Quantum Electronics & Optoelectronics
Online Access:http://dspace.nbuv.gov.ua/handle/123456789/118868
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spelling irk-123456789-1188682017-06-01T03:04:53Z Measurement and analysis of reversible transformations of vortex-free and singular light fields produced by PDLC cells Ponevchinsky, V.V. Vasil’ev, V.I. Soskin, M.S. In this work, we have firstly realized and investigated reversible transformations of vortex-free and singular optical complex landscapes appearing in a He-Ne laser beam transmitted through a PDLC cell, which is controlled by an applied DC voltage. Biaxes of all micro size LC domains are oriented approximately along the applied electric field, and vortex-free complex landscape exists at 200 V. At 160 V, biaxes orientation spreads, and the first ‘embryo’ of vortices in the form of a smooth phase step appears. The first vortex pair nucleates at 140 V. Multitude of vortex pairs is realized when electric field is switched off. Reversed evolution is realized when the applied DC voltage grows from zero value to 200 V. It was shown that the observed topological evolution is fully defined by changes in structure and localization of real and imaginary zero-intensity lines for output complex light field. The developed technique of parametric dynamics can be applied successfully to realize and investigate various types of controlled optical elements including media with nanoadditions. 2009 Article Measurement and analysis of reversible transformations of vortex-free and singular light fields produced by PDLC cells / V.V. Ponevchinsky, V.I. Vasil’ev, M.S. Soskin // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2009. — Т. 12, № 3. — С. 234-239. — Бібліогр.: 16 назв. — англ. 1560-8034 PACS 42.25.Ja 42.30.Ms 42.25.Kb http://dspace.nbuv.gov.ua/handle/123456789/118868 en Semiconductor Physics Quantum Electronics & Optoelectronics Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України
institution Digital Library of Periodicals of National Academy of Sciences of Ukraine
collection DSpace DC
language English
description In this work, we have firstly realized and investigated reversible transformations of vortex-free and singular optical complex landscapes appearing in a He-Ne laser beam transmitted through a PDLC cell, which is controlled by an applied DC voltage. Biaxes of all micro size LC domains are oriented approximately along the applied electric field, and vortex-free complex landscape exists at 200 V. At 160 V, biaxes orientation spreads, and the first ‘embryo’ of vortices in the form of a smooth phase step appears. The first vortex pair nucleates at 140 V. Multitude of vortex pairs is realized when electric field is switched off. Reversed evolution is realized when the applied DC voltage grows from zero value to 200 V. It was shown that the observed topological evolution is fully defined by changes in structure and localization of real and imaginary zero-intensity lines for output complex light field. The developed technique of parametric dynamics can be applied successfully to realize and investigate various types of controlled optical elements including media with nanoadditions.
format Article
author Ponevchinsky, V.V.
Vasil’ev, V.I.
Soskin, M.S.
spellingShingle Ponevchinsky, V.V.
Vasil’ev, V.I.
Soskin, M.S.
Measurement and analysis of reversible transformations of vortex-free and singular light fields produced by PDLC cells
Semiconductor Physics Quantum Electronics & Optoelectronics
author_facet Ponevchinsky, V.V.
Vasil’ev, V.I.
Soskin, M.S.
author_sort Ponevchinsky, V.V.
title Measurement and analysis of reversible transformations of vortex-free and singular light fields produced by PDLC cells
title_short Measurement and analysis of reversible transformations of vortex-free and singular light fields produced by PDLC cells
title_full Measurement and analysis of reversible transformations of vortex-free and singular light fields produced by PDLC cells
title_fullStr Measurement and analysis of reversible transformations of vortex-free and singular light fields produced by PDLC cells
title_full_unstemmed Measurement and analysis of reversible transformations of vortex-free and singular light fields produced by PDLC cells
title_sort measurement and analysis of reversible transformations of vortex-free and singular light fields produced by pdlc cells
publisher Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України
publishDate 2009
url http://dspace.nbuv.gov.ua/handle/123456789/118868
citation_txt Measurement and analysis of reversible transformations of vortex-free and singular light fields produced by PDLC cells / V.V. Ponevchinsky, V.I. Vasil’ev, M.S. Soskin // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2009. — Т. 12, № 3. — С. 234-239. — Бібліогр.: 16 назв. — англ.
series Semiconductor Physics Quantum Electronics & Optoelectronics
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AT vasilevvi measurementandanalysisofreversibletransformationsofvortexfreeandsingularlightfieldsproducedbypdlccells
AT soskinms measurementandanalysisofreversibletransformationsofvortexfreeandsingularlightfieldsproducedbypdlccells
first_indexed 2023-10-18T20:33:11Z
last_indexed 2023-10-18T20:33:11Z
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