Interaction and cooling of the indirect excitons in elevated traps

A.A. High; A.T. Hammack; L.V. Butov; L. Mouchliadis; A.L. Ivanov; M. Hanson; A.C. Gossard

Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference and Photonic Applications Systems Technologies
OSA Technical Digest (CD) (Optica Publishing Group, 2008),
paper QThE2

Interaction and cooling of the indirect excitons in elevated traps

A.A. High, A.T. Hammack, L.V. Butov, L. Mouchliadis, A.L. Ivanov, M. Hanson, and A.C. Gossard

Quantum Electronics and Laser Science Conference 2008

San Jose, California United States
4–9 May 2008
ISBN: 978-1-55752-859-9

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Quantum Degenerate Gases (QThE)

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A. A. High, A. T. Hammack, L. V. Butov, L. Mouchliadis, A. L. Ivanov, M. Hanson, and A. C. Gossard, "Interaction and cooling of the indirect excitons in elevated traps," in Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference and Photonic Applications Systems Technologies, OSA Technical Digest (CD) (Optica Publishing Group, 2008), paper QThE2.

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Abstract

We present studies of 2D indirect excitons in an in-plane trap created by a laterally modulated gate voltage. Our data indicates an effective evaporative cooling of excitons in the elevated trap regime. We also observed narrow PL lines which correspond to the emission of localized and delocalized states of the indirect excitons in the trap. The homogeneous line broadening due to interaction increases with density and dominates the linewidth of the indirect exciton emission at high densities.

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