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Beaming random lasers with soliton control
Random lasers are resonator-less light sources where feedback stems from recurrent scattering at the expense of spatial profile and directionality. Suitably-doped nematic liquid crystals can random lase when optically pumped near resonance(s); moreover, through molecular reorientation within the tra...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6155064/ https://www.ncbi.nlm.nih.gov/pubmed/30242163 http://dx.doi.org/10.1038/s41467-018-06170-9 |
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author | Perumbilavil, Sreekanth Piccardi, Armando Barboza, Raouf Buchnev, Oleksandr Kauranen, Martti Strangi, Giuseppe Assanto, Gaetano |
author_facet | Perumbilavil, Sreekanth Piccardi, Armando Barboza, Raouf Buchnev, Oleksandr Kauranen, Martti Strangi, Giuseppe Assanto, Gaetano |
author_sort | Perumbilavil, Sreekanth |
collection | PubMed |
description | Random lasers are resonator-less light sources where feedback stems from recurrent scattering at the expense of spatial profile and directionality. Suitably-doped nematic liquid crystals can random lase when optically pumped near resonance(s); moreover, through molecular reorientation within the transparency region, they support self-guided optical spatial solitons, i.e., light-induced waveguides. Here, we synergistically combine solitons and collinear pumping in weakly scattering dye-doped nematic liquid crystals, whereby random lasing and self-confinement concur to beaming the emission, with several improved features: all-optical switching driven by a low-power input, laser directionality and smooth output profile with high-conversion efficiency, externally controlled angular steering. Such effects make soliton-assisted random lasers an outstanding route towards application-oriented random lasers. |
format | Online Article Text |
id | pubmed-6155064 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-61550642018-09-28 Beaming random lasers with soliton control Perumbilavil, Sreekanth Piccardi, Armando Barboza, Raouf Buchnev, Oleksandr Kauranen, Martti Strangi, Giuseppe Assanto, Gaetano Nat Commun Article Random lasers are resonator-less light sources where feedback stems from recurrent scattering at the expense of spatial profile and directionality. Suitably-doped nematic liquid crystals can random lase when optically pumped near resonance(s); moreover, through molecular reorientation within the transparency region, they support self-guided optical spatial solitons, i.e., light-induced waveguides. Here, we synergistically combine solitons and collinear pumping in weakly scattering dye-doped nematic liquid crystals, whereby random lasing and self-confinement concur to beaming the emission, with several improved features: all-optical switching driven by a low-power input, laser directionality and smooth output profile with high-conversion efficiency, externally controlled angular steering. Such effects make soliton-assisted random lasers an outstanding route towards application-oriented random lasers. Nature Publishing Group UK 2018-09-21 /pmc/articles/PMC6155064/ /pubmed/30242163 http://dx.doi.org/10.1038/s41467-018-06170-9 Text en © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Perumbilavil, Sreekanth Piccardi, Armando Barboza, Raouf Buchnev, Oleksandr Kauranen, Martti Strangi, Giuseppe Assanto, Gaetano Beaming random lasers with soliton control |
title | Beaming random lasers with soliton control |
title_full | Beaming random lasers with soliton control |
title_fullStr | Beaming random lasers with soliton control |
title_full_unstemmed | Beaming random lasers with soliton control |
title_short | Beaming random lasers with soliton control |
title_sort | beaming random lasers with soliton control |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6155064/ https://www.ncbi.nlm.nih.gov/pubmed/30242163 http://dx.doi.org/10.1038/s41467-018-06170-9 |
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