Xie, Z.
, Gotzinger, S.
, Fang, W.
, Cao, H.
and Solomon, G.
(2021),
The Influence of a Single Quantum Dot State on the Characteristics of a Microdisk Laser, Physical Review Letters
(Accessed September 1, 2025)
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The Influence of a Single Quantum Dot State on the Characteristics of a Microdisk Laser
Published
Author(s)
Z G. Xie, S Gotzinger, W Fang, H Cao,
Abstract
We report a quantum dot microcavity laser with a cw sub- W lasing threshold. In the region below threshold, the Q initially degrades with increasing pump power, after which saturation occurs and the Q recovers and exceeds the spectrometer resolution. We associate the initial Q spoiling with the QD state broadening that occurs with increasing pump power. For a 1.8 m diameter microdisk, the Q before lasing typically exceeds 15000. While lasing occurs under a variety of conditions, significant reduction of the lasing threshold is observed when an individual QD state is aligned with the cavity.Citation
Physical Review Letters
Pub Type
Journals
Keywords
lasing, microcavity, quantum electrodynamics, semiconductor, single quantum dot
Citation
Issues
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Created October 12, 2021