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Proceedings Paper

PbSe quantum dots grown in a high-index, low-melting-temperature glass for infrared laser applications
Author(s): P. Kannan; A. Choudhary; B. Mills; V. M. Leonard; D. W. Hewak; X. Feng; D. P. Shepherd
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Paper Abstract

PbSe quantum dots (QDs) were grown in high-refractive-index low-melting-temperature leadphosphate glass. QDs with various sizes ranging from 2 nm to 5.3 nm were grown by controlling the growth parameters, heat-treatment temperature and time. The corresponding room-temperature exciton absorption was tuned within the infrared region from 0.93 μm to 2.75 μm. Photoluminescence was measured for samples with absorption peaks above 0.95eV. Real time quantum dot growth was demonstrated by monitoring the evolution of exciton absorption with temperature and time duration. As a demonstration of the use of QDs in laser applications, the saturation fluence (Fsat) of one of the QDs was evaluated and found to be ~2.1 μJ/cm2 at 1.2 μm.

Paper Details

Date Published: 20 February 2013
PDF: 8 pages
Proc. SPIE 8621, Optical Components and Materials X, 862104 (20 February 2013); doi: 10.1117/12.2001079
Show Author Affiliations
P. Kannan, Univ. of Southampton (United Kingdom)
A. Choudhary, Univ. of Southampton (United Kingdom)
B. Mills, Univ. of Southampton (United Kingdom)
V. M. Leonard, Univ. of Southampton (United Kingdom)
D. W. Hewak, Univ. of Southampton (United Kingdom)
X. Feng, Univ. of Southampton (United Kingdom)
D. P. Shepherd, Univ. of Southampton (United Kingdom)

Published in SPIE Proceedings Vol. 8621:
Optical Components and Materials X
Michel J. F. Digonnet; Shibin Jiang; J. Christopher Dries, Editor(s)

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