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Small-signal modulation characteristics of a polariton laser
Use of large bandgap materials together with electrical injection makes the polariton laser an attractive low-power coherent light source for medical and biomedical applications or short distance plastic fiber communication at short wavelengths (violet and ultra-violet), where a conventional laser i...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4495564/ https://www.ncbi.nlm.nih.gov/pubmed/26154681 http://dx.doi.org/10.1038/srep11915 |
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author | Zunaid Baten, Md Frost, Thomas Iorsh, Ivan Deshpande, Saniya Kavokin, Alexey Bhattacharya, Pallab |
author_facet | Zunaid Baten, Md Frost, Thomas Iorsh, Ivan Deshpande, Saniya Kavokin, Alexey Bhattacharya, Pallab |
author_sort | Zunaid Baten, Md |
collection | PubMed |
description | Use of large bandgap materials together with electrical injection makes the polariton laser an attractive low-power coherent light source for medical and biomedical applications or short distance plastic fiber communication at short wavelengths (violet and ultra-violet), where a conventional laser is difficult to realize. The dynamic properties of a polariton laser have not been investigated experimentally. We have measured, for the first time, the small signal modulation characteristics of a GaN-based electrically pumped polariton laser operating at room temperature. A maximum −3 dB modulation bandwidth of 1.18 GHz is measured. The experimental results have been analyzed with a theoretical model based on the Boltzmann kinetic equations and the agreement is very good. We have also investigated frequency chirping during such modulation. Gain compression phenomenon in a polariton laser is interpreted and a value is obtained for the gain compression factor. |
format | Online Article Text |
id | pubmed-4495564 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-44955642015-07-13 Small-signal modulation characteristics of a polariton laser Zunaid Baten, Md Frost, Thomas Iorsh, Ivan Deshpande, Saniya Kavokin, Alexey Bhattacharya, Pallab Sci Rep Article Use of large bandgap materials together with electrical injection makes the polariton laser an attractive low-power coherent light source for medical and biomedical applications or short distance plastic fiber communication at short wavelengths (violet and ultra-violet), where a conventional laser is difficult to realize. The dynamic properties of a polariton laser have not been investigated experimentally. We have measured, for the first time, the small signal modulation characteristics of a GaN-based electrically pumped polariton laser operating at room temperature. A maximum −3 dB modulation bandwidth of 1.18 GHz is measured. The experimental results have been analyzed with a theoretical model based on the Boltzmann kinetic equations and the agreement is very good. We have also investigated frequency chirping during such modulation. Gain compression phenomenon in a polariton laser is interpreted and a value is obtained for the gain compression factor. Nature Publishing Group 2015-07-08 /pmc/articles/PMC4495564/ /pubmed/26154681 http://dx.doi.org/10.1038/srep11915 Text en Copyright © 2015, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Zunaid Baten, Md Frost, Thomas Iorsh, Ivan Deshpande, Saniya Kavokin, Alexey Bhattacharya, Pallab Small-signal modulation characteristics of a polariton laser |
title | Small-signal modulation characteristics of a polariton laser |
title_full | Small-signal modulation characteristics of a polariton laser |
title_fullStr | Small-signal modulation characteristics of a polariton laser |
title_full_unstemmed | Small-signal modulation characteristics of a polariton laser |
title_short | Small-signal modulation characteristics of a polariton laser |
title_sort | small-signal modulation characteristics of a polariton laser |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4495564/ https://www.ncbi.nlm.nih.gov/pubmed/26154681 http://dx.doi.org/10.1038/srep11915 |
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