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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-Seguin
We 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

0277-786X

Publisher

SPIE

Issue

94-103

Volume

5729

Presentation Type

  • paper

Event name

Optoelectronic Integrated Circuits VII

Event location

San Jose, CA, USA

Event type

conference

Event date

Tuesday 25 January 2005

ISBN

0-8194-5703-5

Department affiliated with

  • Physics and Astronomy Publications

Full text available

  • No

Peer reviewed?

  • Yes

Legacy Posted Date

2012-02-06

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