Color-selective semiconductor nanocrystal laser

Theoretical predictions of the benefits of three-dimensional quantum confinement have provided motivation for the development of quantum-dot lasers. Such lasers, developed in the case of self-assembled quantum dots, have not been successfully demonstrated with quantum-confined colloidal nanocrystals...

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Bibliographic Details
Published in:Applied physics letters 2002-06, Vol.80 (24), p.4614-4616
Main Authors: Eisler, Hans-Jürgen, Sundar, Vikram C., Bawendi, Moungi G., Walsh, Michael, Smith, Henry I., Klimov, Victor
Format: Article
Language:English
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Summary:Theoretical predictions of the benefits of three-dimensional quantum confinement have provided motivation for the development of quantum-dot lasers. Such lasers, developed in the case of self-assembled quantum dots, have not been successfully demonstrated with quantum-confined colloidal nanocrystals (NCs). Here, using recently developed NC-titania chemistry, we report the successful development of an optically pumped, NC-based distributed feedback laser, in which the narrow gain profiles of these nanoparticles have been matched with the feedback of a second-order distributed feedback laser. This laser, whose output color can be selected by choosing appropriately sized nanocrystals, operates at 80 K and at room temperature.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.1485125