Room-Temperature Polariton Lasing in Semiconductor Microcavities
Open accessAbstract
We observe a room-temperature low-threshold transition to a coherent polariton state in bulk GaN microcavities in the strong-coupling regime. Nonresonant pulsed optical pumping produces rapid thermalization and yields a clear emission threshold of 1 mW, corresponding to an absorbed energy density of 29 microJ cm-2, 1 order of magnitude smaller than the best optically pumped (In,Ga)N quantum-well surface-emitting lasers (VCSELs). Angular and spectrally resolved luminescence show that the polariton emission is beamed in the normal direction with an angular width of +/-5 degrees and spatial size around 5 microm.
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Semiconductor microcavities in the strong exciton-photon coupling regime host a number of remarkable bosonic effects such as polariton lasing and superfluid behaviour.
“Semiconductor microcavities in the strong exciton-photon coupling regime are host for a number of remarkable bosonic effects such as polariton lasing [13] and superfluid behaviour [14].”
From <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi mathvariant="italic">Zitterbewegung</mml:mi></mml:math> of exciton-polaritons (2018) · cites this paper as [14]
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- Authors
- Christopoulos, S., von Högersthal, G. B. H., Grundy, A. J. D., Lagoudakis, P. G., Kavokin, A. V., Baumberg, J. J., Christmann, G., Butté, R., Feltin, E., Carlin, J.-F., & Grandjean, N.
- Affiliations
- University of Southampton (GB)
- ORCID
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2007-03-21
- Volume
- 98
- Issue
- 12
- Pages
- 126405-126405
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W1988214170
- Cited by
- 1,020
- References
- 0
- Citations by year
- 2026: 39 · 2025: 46 · 2024: 44 · 2023: 57 · 2022: 52 · 2021: 44 · 2020: 44 · 2019: 47 · 2018: 54 · 2017: 53 · 2016: 63 · 2015: 57 · 2014: 64 · 2013: 69 · 2012: 67
- FWCI
- 33.25
- Type
- journal article
- Language
- en
- Open access
- green
- infoscience.epfl.ch
- Locations
- Physical Review Letters (publishedVersion)
- PubMed (publishedVersion)
- HAL (submittedVersion)
- ePrints Soton (University of Southampton) (submittedVersion)
- Infoscience (Ecole Polytechnique Fédérale de Lausanne) (submittedVersion)
- Infoscience (Ecole Polytechnique Fédérale de Lausanne) (submittedVersion, cc-by-nc-nd)
- Topics
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Strong Light-Matter Interactions
- Physical Sciences › Physics and Astronomy › Condensed Matter Physics › GaN-based semiconductor devices and materials
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Semiconductor Quantum Structures and Devices
- Keywords
- polariton lasing, semiconductor microcavities, GaN microcavities, strong coupling, room-temperature lasing, thermalization, angular resolution
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