Ultrafast nonequilibrium dynamics of strongly coupled resonances in the intrinsic cavity of WS_{2} nanotubes
Strong coupling of electric transition dipoles with optical or plasmonic resonators modifies their light-matter interaction and, therefore, their optical spectra. Semiconducting WS_{2} nanotubes intrinsically provide the dipoles through their excitonic resonances, and the optical cavity via their cy...
Main Authors: | , , , , , , , , |
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Format: | Article |
Language: | English |
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American Physical Society
2019-10-01
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Series: | Physical Review Research |
Online Access: | http://doi.org/10.1103/PhysRevResearch.1.033046 |
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author | Bojana Višić Lena Yadgarov Eva A. A. Pogna Stefano Dal Conte Victor Vega-Mayoral Daniele Vella Reshef Tenne Giulio Cerullo Christoph Gadermaier |
author_facet | Bojana Višić Lena Yadgarov Eva A. A. Pogna Stefano Dal Conte Victor Vega-Mayoral Daniele Vella Reshef Tenne Giulio Cerullo Christoph Gadermaier |
author_sort | Bojana Višić |
collection | DOAJ |
description | Strong coupling of electric transition dipoles with optical or plasmonic resonators modifies their light-matter interaction and, therefore, their optical spectra. Semiconducting WS_{2} nanotubes intrinsically provide the dipoles through their excitonic resonances, and the optical cavity via their cylindrical shape. We investigate the nonequilibrium light-matter interaction in WS_{2} nanotubes in the time domain using femtosecond transient extinction spectroscopy. We develop a phenomenological coupled oscillator model with time-dependent parameters to describe the transient extinction spectra, allowing us to extract the underlying nonequilibrium electron dynamics. We find that the exciton and trion resonances shift due to many-body effects of the photogenerated charge carriers and their population dynamics on the femto- and picosecond timescale. Our results show that the time-dependent phenomenological model quantitatively reproduces the nonequilibrium optical response of strongly coupled systems. |
first_indexed | 2024-04-24T10:30:39Z |
format | Article |
id | doaj.art-cce746d159cf4893800b475d4cf32cc3 |
institution | Directory Open Access Journal |
issn | 2643-1564 |
language | English |
last_indexed | 2024-04-24T10:30:39Z |
publishDate | 2019-10-01 |
publisher | American Physical Society |
record_format | Article |
series | Physical Review Research |
spelling | doaj.art-cce746d159cf4893800b475d4cf32cc32024-04-12T16:46:20ZengAmerican Physical SocietyPhysical Review Research2643-15642019-10-011303304610.1103/PhysRevResearch.1.033046Ultrafast nonequilibrium dynamics of strongly coupled resonances in the intrinsic cavity of WS_{2} nanotubesBojana VišićLena YadgarovEva A. A. PognaStefano Dal ConteVictor Vega-MayoralDaniele VellaReshef TenneGiulio CerulloChristoph GadermaierStrong coupling of electric transition dipoles with optical or plasmonic resonators modifies their light-matter interaction and, therefore, their optical spectra. Semiconducting WS_{2} nanotubes intrinsically provide the dipoles through their excitonic resonances, and the optical cavity via their cylindrical shape. We investigate the nonequilibrium light-matter interaction in WS_{2} nanotubes in the time domain using femtosecond transient extinction spectroscopy. We develop a phenomenological coupled oscillator model with time-dependent parameters to describe the transient extinction spectra, allowing us to extract the underlying nonequilibrium electron dynamics. We find that the exciton and trion resonances shift due to many-body effects of the photogenerated charge carriers and their population dynamics on the femto- and picosecond timescale. Our results show that the time-dependent phenomenological model quantitatively reproduces the nonequilibrium optical response of strongly coupled systems.http://doi.org/10.1103/PhysRevResearch.1.033046 |
spellingShingle | Bojana Višić Lena Yadgarov Eva A. A. Pogna Stefano Dal Conte Victor Vega-Mayoral Daniele Vella Reshef Tenne Giulio Cerullo Christoph Gadermaier Ultrafast nonequilibrium dynamics of strongly coupled resonances in the intrinsic cavity of WS_{2} nanotubes Physical Review Research |
title | Ultrafast nonequilibrium dynamics of strongly coupled resonances in the intrinsic cavity of WS_{2} nanotubes |
title_full | Ultrafast nonequilibrium dynamics of strongly coupled resonances in the intrinsic cavity of WS_{2} nanotubes |
title_fullStr | Ultrafast nonequilibrium dynamics of strongly coupled resonances in the intrinsic cavity of WS_{2} nanotubes |
title_full_unstemmed | Ultrafast nonequilibrium dynamics of strongly coupled resonances in the intrinsic cavity of WS_{2} nanotubes |
title_short | Ultrafast nonequilibrium dynamics of strongly coupled resonances in the intrinsic cavity of WS_{2} nanotubes |
title_sort | ultrafast nonequilibrium dynamics of strongly coupled resonances in the intrinsic cavity of ws 2 nanotubes |
url | http://doi.org/10.1103/PhysRevResearch.1.033046 |
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