Bragg polaritons in a ZnSe-based unfolded microcavity at elevated temperatures
| Autor: | Sebastian Klembt, Detlef Hommel, T. Kaya, M. Cornelius, Jürgen Gutowski, K. Sebald, A. Gust, Sk. S. Rahman, Thorsten Klein |
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| Přispěvatelé: | Universität Bremen, Nanophysique et Semiconducteurs (NPSC), Institut Néel (NEEL), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]) |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Physics and Astronomy (miscellaneous)
Exciton Physics::Optics 02 engineering and technology 01 natural sciences 7. Clean energy Effective mass (solid-state physics) 0103 physical sciences Polariton 010306 general physics Quantum well ComputingMilieux_MISCELLANEOUS Condensed Matter::Quantum Gases Physics [PHYS]Physics [physics] Condensed matter physics Condensed Matter::Other business.industry Wide-bandgap semiconductor Condensed Matter::Mesoscopic Systems and Quantum Hall Effect 021001 nanoscience & nanotechnology Strong coupling Semiconductor quantum wells Photonics 0210 nano-technology business |
| Zdroj: | Applied Physics Letters Applied Physics Letters, American Institute of Physics, 2016, 108 (12), pp.121105. ⟨10.1063/1.4944717⟩ |
| ISSN: | 0003-6951 |
| DOI: | 10.1063/1.4944717⟩ |
| Popis: | 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 configu... |
| Databáze: | OpenAIRE |
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