A low lasing threshold and widely tunable spaser based on two dark surface plasmons

We theoretically demonstrate a low threshold and widely tunable spaser based on a plasmonic nanostructure consisting of two sets of disk-rings (TSDR). The TSDR nanostructure supports two dark surface plasmons (SPs), which are excited simultaneously by two bright SPs at Fano dips. The two dark SPs su...

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Autores principales: Huo, Yanyan, Jia, Tianqing, Ning, Tingyin, Tan, Chaohua, Jiang, Shouzhen, Yang, Cheng, Jiao, Yang, Man, Baoyuan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2017
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5648854/
https://www.ncbi.nlm.nih.gov/pubmed/29051503
http://dx.doi.org/10.1038/s41598-017-12463-8
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author Huo, Yanyan
Jia, Tianqing
Ning, Tingyin
Tan, Chaohua
Jiang, Shouzhen
Yang, Cheng
Jiao, Yang
Man, Baoyuan
author_facet Huo, Yanyan
Jia, Tianqing
Ning, Tingyin
Tan, Chaohua
Jiang, Shouzhen
Yang, Cheng
Jiao, Yang
Man, Baoyuan
author_sort Huo, Yanyan
collection PubMed
description We theoretically demonstrate a low threshold and widely tunable spaser based on a plasmonic nanostructure consisting of two sets of disk-rings (TSDR). The TSDR nanostructure supports two dark surface plasmons (SPs), which are excited simultaneously by two bright SPs at Fano dips. The two dark SPs support lower effective mode volume, higher quality factor and higher Purcell factors. When the dark SPs serve as the pumping and lasing mode of a spaser, the spaser has a lower lasing threshold, a higher pump absorption efficiency and a lower threshold absorbed pump power than the spaser based on a bright SP. In addition, the lasing and pumping wavelengths of the spaser proposed in this article can each be tuned over a very wide wavelength range. Our results should be significant for the development of spasers.
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spelling pubmed-56488542017-10-26 A low lasing threshold and widely tunable spaser based on two dark surface plasmons Huo, Yanyan Jia, Tianqing Ning, Tingyin Tan, Chaohua Jiang, Shouzhen Yang, Cheng Jiao, Yang Man, Baoyuan Sci Rep Article We theoretically demonstrate a low threshold and widely tunable spaser based on a plasmonic nanostructure consisting of two sets of disk-rings (TSDR). The TSDR nanostructure supports two dark surface plasmons (SPs), which are excited simultaneously by two bright SPs at Fano dips. The two dark SPs support lower effective mode volume, higher quality factor and higher Purcell factors. When the dark SPs serve as the pumping and lasing mode of a spaser, the spaser has a lower lasing threshold, a higher pump absorption efficiency and a lower threshold absorbed pump power than the spaser based on a bright SP. In addition, the lasing and pumping wavelengths of the spaser proposed in this article can each be tuned over a very wide wavelength range. Our results should be significant for the development of spasers. Nature Publishing Group UK 2017-10-19 /pmc/articles/PMC5648854/ /pubmed/29051503 http://dx.doi.org/10.1038/s41598-017-12463-8 Text en © The Author(s) 2017 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
Huo, Yanyan
Jia, Tianqing
Ning, Tingyin
Tan, Chaohua
Jiang, Shouzhen
Yang, Cheng
Jiao, Yang
Man, Baoyuan
A low lasing threshold and widely tunable spaser based on two dark surface plasmons
title A low lasing threshold and widely tunable spaser based on two dark surface plasmons
title_full A low lasing threshold and widely tunable spaser based on two dark surface plasmons
title_fullStr A low lasing threshold and widely tunable spaser based on two dark surface plasmons
title_full_unstemmed A low lasing threshold and widely tunable spaser based on two dark surface plasmons
title_short A low lasing threshold and widely tunable spaser based on two dark surface plasmons
title_sort low lasing threshold and widely tunable spaser based on two dark surface plasmons
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5648854/
https://www.ncbi.nlm.nih.gov/pubmed/29051503
http://dx.doi.org/10.1038/s41598-017-12463-8
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