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Proceedings Paper

Optical pumped stimulated emission in ZnO-based quantum wells grown by PLD
Author(s): A. A. Lotin; O. A. Novodvorsky; D. A. Zuev; L. S. Parshina; O. D. Khramova
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Paper Abstract

Two series of MgxZn1-xO/ZnO multiple quantum wells with 18 at.% and 27 at.% of magnesium content in barrier layers and well width Lw from 1 nm to 20 have been grown by pulsed laser deposition method. The stimulated emission is observed in photoluminescence spectra excited by pulsed laser (λexc=248 nm). The pump density threshold of stimulated emission nonmonotonously depends on the well width that is associated with an increase of the internal quantum efficiency of two-dimensional structures caused by a reduction of radiative lifetime of excitons at decreasing of the well width as it has been shown by the time-resolved photoluminescence spectra analysis. The minimum value of a lifetime τr=355 ps was obtained for the Mg0.27Zn0.73O/ZnO MQW with the well width Lw=2.6 nm.

Paper Details

Date Published: 19 October 2012
PDF: 8 pages
Proc. SPIE 8463, Nanoengineering: Fabrication, Properties, Optics, and Devices IX, 84630I (19 October 2012); doi: 10.1117/12.928897
Show Author Affiliations
A. A. Lotin, Institute on Laser and Information Technologies (Russian Federation)
O. A. Novodvorsky, Institute on Laser and Information Technologies (Russian Federation)
D. A. Zuev, Institute on Laser and Information Technologies (Russian Federation)
L. S. Parshina, Institute on Laser and Information Technologies (Russian Federation)
O. D. Khramova, Institute on Laser and Information Technologies (Russian Federation)


Published in SPIE Proceedings Vol. 8463:
Nanoengineering: Fabrication, Properties, Optics, and Devices IX
Elizabeth A. Dobisz; Louay A. Eldada, Editor(s)

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