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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| Published in: | Semiconductor Physics Quantum Electronics & Optoelectronics |
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| Date: | 2009 |
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| Language: | English |
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Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України
2009
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| Online Access: | https://nasplib.isofts.kiev.ua/handle/123456789/118868 |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | 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. |
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Ponevchinsky, V.V. Vasil’ev, V.I. Soskin, M.S. 2017-05-31T19:43:15Z 2017-05-31T19:43:15Z 2009 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 https://nasplib.isofts.kiev.ua/handle/123456789/118868 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. This work was supported by STCU Project 4687. Authors are thankful to Drs. L.A. Dolgov, O.V. Yaroshchuk for provision of PDLC cells, introduction to their physics and numerous fruitful discussions. Authors are thankful to Prof. M. Berry (Bristol University) for fruitful discussions. en Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України Semiconductor Physics Quantum Electronics & Optoelectronics Measurement and analysis of reversible transformations of vortex-free and singular light fields produced by PDLC cells Article published earlier |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine |
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| title |
Measurement and analysis of reversible transformations of vortex-free and singular light fields produced by PDLC cells |
| spellingShingle |
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. |
| 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 |
| author |
Ponevchinsky, V.V. Vasil’ev, V.I. Soskin, M.S. |
| author_facet |
Ponevchinsky, V.V. Vasil’ev, V.I. Soskin, M.S. |
| publishDate |
2009 |
| language |
English |
| container_title |
Semiconductor Physics Quantum Electronics & Optoelectronics |
| publisher |
Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України |
| format |
Article |
| 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.
|
| issn |
1560-8034 |
| url |
https://nasplib.isofts.kiev.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. |
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| first_indexed |
2025-12-07T15:13:27Z |
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2025-12-07T15:13:27Z |
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