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22 August 2020 Lasing from single perovskite quantum dot in a gap-plasmon nanocavity
Yu-Jung Lu
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Proceedings Volume 11462, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XVIII; 114621K (2020) https://doi.org/10.1117/12.2567844
Event: SPIE Nanoscience + Engineering, 2020, Online Only
Abstract
We report continuous-wave (CW) lasing at 535 nm from a single lead halide perovskite (CsPbBr3) quantum dot (PQD) in a gap plasmon nanocavity with an ultralow threshold (lower than 90 mWcm-2) under 4 K. The ultrasmall mode volume dramatically enhances the light-matter interaction to achieve CW lasing. By raising the temperature, a clear lasing threshold can be observed at temperatures above 80 K. The demonstration of single QD lasing, which operates in the strong coupling regime, provides a new approach for realizing electrically driven lasing and integration into ultracompact optoelectronic devices. The detail mechanism of plasmonic lasing will be discussed.
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Yu-Jung Lu "Lasing from single perovskite quantum dot in a gap-plasmon nanocavity", Proc. SPIE 11462, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XVIII, 114621K (22 August 2020); https://doi.org/10.1117/12.2567844
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KEYWORDS
Perovskite
Quantum dots
Continuous wave operation
Lead
Laser damage threshold
Light-matter interactions
Luminescence
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