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Silica microspheres as high-Q microcavities for semiconductor quantum-dot lasers.
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posted on 2023-06-08, 10:00 authored by Jean Hare, Sebastien Steiner, Fedja OrucevicFedja Orucevic, Valerie Lefevre-SeguinWe report an experiment where InAs/GaAs self-organized Quantum Dots (QD) are coupled to the evanescent field of very-high-Q Whispering Gallery Modes (WGM) in a silica microsphere. The high performance of these microcavity and nanoemitters allowed to achieve very low threshold (200 \\\\mu W) laser operation at room temperature, involving a few thousands of QD. We show that such a low threshold relies heavily on WGM deconfinement and reconstruction in the micromesa etched in GaAs sample. Next, we present some prospects on further experiments involving various semiconductor nanostructures coupled to microspheres or to silica microtoroids integrated on a Si chip (as recently introduced by K.J. Vahala and coworkers at Caltech).
History
Publication status
- Published
ISSN
0277-786XPublisher
SPIEPublisher URL
Issue
94-103Volume
5729Presentation Type
- paper
Event name
Optoelectronic Integrated Circuits VIIEvent location
San Jose, CA, USAEvent type
conferenceEvent date
Tuesday 25 January 2005ISBN
0-8194-5703-5Department affiliated with
- Physics and Astronomy Publications
Full text available
- No
Peer reviewed?
- Yes
Legacy Posted Date
2012-02-06Usage metrics
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