Decay and coherence of two-photon excited yellow ortho-excitons in Cu2O

Thumbnail Image

Date

Authors

Journal Title

Journal ISSN

Volume Title

Publisher

Abstract

Description

Photoluminescence excitation spectroscopy has revealed a novel, highly efficient two-photon excitation method to produce a cold, uniformly distributed high density excitonic gas in bulk cuprous oxide. A study of the time evolution of the density, temperature and chemical potential of the exciton gas shows that the so called quantum saturation effect that prevents Bose-Einstein condensation of the ortho-exciton gas originates from an unfavorable ratio between the cooling and recombination rates. Oscillations observed in the temporal decay of the ortho-excitonic luminescence intensity are discussed in terms of polaritonic beating. We present the semiclassical description of polaritonic oscillations in linear and non-linear optical processes.
14 pages, 12 figures

Keywords

Strongly Correlated Electrons, Other Condensed Matter

Citation

URI

http://salesiana.dossiersoluciones.com/handle/123456789/99248

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0505368
 http://arxiv.org/abs/cond-mat/0505368
 Physical Review B72, 155201 (2005).
 doi:10.1103/PhysRevB.72.155201

Collections

arXiv