Tunable Bragg polaritons and nonlinear emission from a hybrid metal-unfolded ZnSe-based microcavity

Abstract Strong light-matter interaction in Bragg structures possesses several advantages over conventional microcavity system. These structures provide an opportunity to incorporate a large number of quantum wells without increasing the mode volume. Further, it is expected that the strong coupling...

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Autores principales:	SK. Shaid-Ur Rahman, Thorsten Klein, Jürgen Gutowski, Sebastian Klembt, Kathrin Sebald
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/aef6a3771a8b48bf81d18e1c2f978e6c
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spelling	oai:doaj.org-article:aef6a3771a8b48bf81d18e1c2f978e6c2021-12-02T11:52:56ZTunable Bragg polaritons and nonlinear emission from a hybrid metal-unfolded ZnSe-based microcavity10.1038/s41598-017-00878-22045-2322https://doaj.org/article/aef6a3771a8b48bf81d18e1c2f978e6c2017-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-00878-2https://doaj.org/toc/2045-2322Abstract Strong light-matter interaction in Bragg structures possesses several advantages over conventional microcavity system. These structures provide an opportunity to incorporate a large number of quantum wells without increasing the mode volume. Further, it is expected that the strong coupling could occur over the entire thickness of the Bragg structure, and the system offers an improved overlap between exciton wave function and light mode. However, advanced experiments in Bragg structures require a precise control and manipulation of quantum states of Bragg polaritons. Here, we propose and experimentally demonstrate novel methods for the modulation of Bragg polariton eigenstates. The modulation will be shown to even exceed 10 meV if the thickness of the top layer of the ZnSe-based Bragg structure is changed or if a thin silver layer is deposited on top of the structure. The Q value of the Bragg mode will be enhanced by a factor of 2.3 for a 30 nm silver layer. In addition, we report on the observation of nonlinear emission of the lower Bragg polariton mode in the hybrid structure being achieved when excitation dependent measurements are performed. Our results open the door to create a confined Bragg polariton system similar to conventional microcavities.SK. Shaid-Ur RahmanThorsten KleinJürgen GutowskiSebastian KlembtKathrin SebaldNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-10 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q SK. Shaid-Ur Rahman Thorsten Klein Jürgen Gutowski Sebastian Klembt Kathrin Sebald Tunable Bragg polaritons and nonlinear emission from a hybrid metal-unfolded ZnSe-based microcavity
description	Abstract Strong light-matter interaction in Bragg structures possesses several advantages over conventional microcavity system. These structures provide an opportunity to incorporate a large number of quantum wells without increasing the mode volume. Further, it is expected that the strong coupling could occur over the entire thickness of the Bragg structure, and the system offers an improved overlap between exciton wave function and light mode. However, advanced experiments in Bragg structures require a precise control and manipulation of quantum states of Bragg polaritons. Here, we propose and experimentally demonstrate novel methods for the modulation of Bragg polariton eigenstates. The modulation will be shown to even exceed 10 meV if the thickness of the top layer of the ZnSe-based Bragg structure is changed or if a thin silver layer is deposited on top of the structure. The Q value of the Bragg mode will be enhanced by a factor of 2.3 for a 30 nm silver layer. In addition, we report on the observation of nonlinear emission of the lower Bragg polariton mode in the hybrid structure being achieved when excitation dependent measurements are performed. Our results open the door to create a confined Bragg polariton system similar to conventional microcavities.
format	article
author	SK. Shaid-Ur Rahman Thorsten Klein Jürgen Gutowski Sebastian Klembt Kathrin Sebald
author_facet	SK. Shaid-Ur Rahman Thorsten Klein Jürgen Gutowski Sebastian Klembt Kathrin Sebald
author_sort	SK. Shaid-Ur Rahman
title	Tunable Bragg polaritons and nonlinear emission from a hybrid metal-unfolded ZnSe-based microcavity
title_short	Tunable Bragg polaritons and nonlinear emission from a hybrid metal-unfolded ZnSe-based microcavity
title_full	Tunable Bragg polaritons and nonlinear emission from a hybrid metal-unfolded ZnSe-based microcavity
title_fullStr	Tunable Bragg polaritons and nonlinear emission from a hybrid metal-unfolded ZnSe-based microcavity
title_full_unstemmed	Tunable Bragg polaritons and nonlinear emission from a hybrid metal-unfolded ZnSe-based microcavity
title_sort	tunable bragg polaritons and nonlinear emission from a hybrid metal-unfolded znse-based microcavity
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/aef6a3771a8b48bf81d18e1c2f978e6c
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Tunable Bragg polaritons and nonlinear emission from a hybrid metal-unfolded ZnSe-based microcavity

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