Journal article
Quantum-dot nano-cavity lasers with Purcell-enhanced stimulated emission
We present a rate equation model for quantum-dot light-emitting devices that take into account Purcell enhancement of both spontaneous emission and stimulated emission as well as the spectral profile of the optical and electronic density-of-states. We find that below threshold the b-factor in a quantum-dot nanolaser depends strongly on the pump.
For quantum dots with linewidth comparable to that of the cavity, we then show that an otherwise non-lasing device can lase due to Purcell enhancement of the stimulated emission. Finally, we compare the rate equation model to a microscopic model and obtain good agreement.
Language: | English |
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Publisher: | American Institute of Physics |
Year: | 2012 |
ISSN: | 10773118 and 00036951 |
Types: | Journal article |
DOI: | 10.1063/1.3697702 |
ORCIDs: | Gregersen, Niels and Mørk, Jesper |