Room Temperature Electrically Injected Polariton Laser
Abstract
Room temperature electrically pumped inversionless polariton lasing is observed from a bulk GaN-based microcavity diode. The low nonlinear threshold for polariton lasing occurs at 169 A/cm(2) in the light-current characteristics, accompanied by a collapse of the emission linewidth and small blueshift of the emission peak. Measurement of angle-resolved luminescence, polariton condensation and occupation in momentum space, and output spatial coherence and polarization have also been made. A second threshold, due to conventional photon lasing, is observed at an injection of 44 kA/cm(2).
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Bose-Einstein condensation and polariton lasing are possible in microcavities, even at room temperature.
“The possibilities of achieving Bose-Einstein condensation (BEC) [264-267] and polariton lasing [137,268-270], even at room temperature, are some of the current topics in the field of microcavity research.”
From Metal Oxide Thin Films for Advanced Photonic Applications (2026) · cites this paper as [269]
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- Authors
- Bhattacharya, P., Frost, T., Deshpande, S., Baten, M. Z., Hazari, A., & Das, A.
- Affiliations
- University of Michigan (US)
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2014-06-10
- Volume
- 112
- Issue
- 23
- Pages
- 236802-236802
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2327976922
- Cited by
- 241
- References
- 45
- Citations by year
- 2026: 6 · 2025: 11 · 2024: 12 · 2023: 12 · 2022: 16 · 2021: 22 · 2020: 22 · 2019: 11 · 2018: 16 · 2017: 50 · 2016: 28 · 2015: 23 · 2014: 12
- FWCI
- 18.67
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Physical Review Letters (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Science Foundation (DMR-1120923, ECS 1220715)
- 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 lasers, GaN microcavities, room-temperature lasing, polariton condensation, spatial coherence, polarization
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