Quantum dot emission confined by a spherical photonic dot

Artemyev, M., Woggon, U. and Langbein, Wolfgang Werner ORCID: https://orcid.org/0000-0001-9786-1023 2002. Quantum dot emission confined by a spherical photonic dot. physica status solidi (b) 229 (1) , pp. 423-426. 10.1002/1521-3951(200201)229:1<423::AID-PSSB423>3.0.CO;2-#

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Abstract

The concept of a fully three-dimensional photonic dot is realized in glass microspheres with CdSe quantum dots (QDs) incorporated. The steady-state and time-resolved photoluminescence of QDs is studied with and without coupling to the photonic dot states. It has been found that the radiative lifetime of a single quantum dot is controlled by the photon lifetime of high-Q cavity modes. At T = 20 K, the increase in the radiative recombination rate is demonstrated and Purcell factors between 2 and 5 are measured. Under pulsed ns-excitation, room-temperature lasing in a single photonic dot is achieved.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Schools > Physics and Astronomy
Subjects:	Q Science > QC Physics
Publisher:	Wiley
ISSN:	1521-3951
Last Modified:	28 Oct 2022 08:36
URI:	https://orca.cardiff.ac.uk/id/eprint/71428

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