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Title: Bragg polaritons in a ZnSe-based unfolded microcavity at elevated temperatures

Abstract

In this contribution, we present strong coupling of ZnSe quantum well excitons to Bragg modes resulting in the formation of Bragg polariton eigenstates, characterized by a small effective mass in comparison to a conventional microcavity. We observe an anticrossing of the excitonic and the photonic component in our sample being a clear signature for the strong-coupling regime. The anticrossing is investigated by changing the detuning between the excitonic components and the Bragg mode. We find anticrossings between the first Bragg mode and the heavy- as well as light-hole exciton, respectively, resulting in three polariton branches. The observed Bragg-polariton branches are in good agreement with theoretical calculations. The strong indication for the existence of strong coupling is traceable up to a temperature of 200 K, with a Rabi-splitting energy of 24 meV and 13 meV for the Bragg mode with the heavy- and light-hole exciton, respectively. These findings demonstrate the advantages of this sample configuration for ZnSe-based devices for the strong coupling regime.

Authors:
; ; ; ;  [1]; ; ;  [2];  [3]
  1. Semiconductor Optics, Institute of Solid State Physics, University of Bremen, 28334 Bremen (Germany)
  2. Semiconductor Epitaxy, Institute of Solid State Physics, University of Bremen, 28334 Bremen (Germany)
  3. Institut Néel, Université Grenoble Alpes and CNRS, B.P. 166, 38042 Grenoble (France)
Publication Date:
OSTI Identifier:
22591457
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 108; Journal Issue: 12; Other Information: (c) 2016 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0003-6951
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 77 NANOSCIENCE AND NANOTECHNOLOGY; EFFECTIVE MASS; EIGENSTATES; EQUIPMENT; EXCITONS; MEV RANGE 10-100; POLARONS; QUANTUM WELLS

Citation Formats

Sebald, K., Rahman, SK. S., Cornelius, M., Kaya, T., Gutowski, J., Klein, T., Gust, A., Hommel, D., and Klembt, S. Bragg polaritons in a ZnSe-based unfolded microcavity at elevated temperatures. United States: N. p., 2016. Web. doi:10.1063/1.4944717.
Sebald, K., Rahman, SK. S., Cornelius, M., Kaya, T., Gutowski, J., Klein, T., Gust, A., Hommel, D., & Klembt, S. Bragg polaritons in a ZnSe-based unfolded microcavity at elevated temperatures. United States. doi:10.1063/1.4944717.
Sebald, K., Rahman, SK. S., Cornelius, M., Kaya, T., Gutowski, J., Klein, T., Gust, A., Hommel, D., and Klembt, S. Mon . "Bragg polaritons in a ZnSe-based unfolded microcavity at elevated temperatures". United States. doi:10.1063/1.4944717.
@article{osti_22591457,
title = {Bragg polaritons in a ZnSe-based unfolded microcavity at elevated temperatures},
author = {Sebald, K. and Rahman, SK. S. and Cornelius, M. and Kaya, T. and Gutowski, J. and Klein, T. and Gust, A. and Hommel, D. and Klembt, S.},
abstractNote = {In this contribution, we present strong coupling of ZnSe quantum well excitons to Bragg modes resulting in the formation of Bragg polariton eigenstates, characterized by a small effective mass in comparison to a conventional microcavity. We observe an anticrossing of the excitonic and the photonic component in our sample being a clear signature for the strong-coupling regime. The anticrossing is investigated by changing the detuning between the excitonic components and the Bragg mode. We find anticrossings between the first Bragg mode and the heavy- as well as light-hole exciton, respectively, resulting in three polariton branches. The observed Bragg-polariton branches are in good agreement with theoretical calculations. The strong indication for the existence of strong coupling is traceable up to a temperature of 200 K, with a Rabi-splitting energy of 24 meV and 13 meV for the Bragg mode with the heavy- and light-hole exciton, respectively. These findings demonstrate the advantages of this sample configuration for ZnSe-based devices for the strong coupling regime.},
doi = {10.1063/1.4944717},
journal = {Applied Physics Letters},
issn = {0003-6951},
number = 12,
volume = 108,
place = {United States},
year = {2016},
month = {3}
}