Exciton Polariton
Mostrando 1-3 de 3 artigos, teses e dissertações.
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1. Frenkel-exciton-polaritons in organic microcavities
We study organic microcavities in the strong coupling regime. The cavity exciton-polariton dispersion relations and quantum states are derived in using a microscopic theory. We consider the two cases of anisotropic organic crystals with one and two molecules per unit cell. In general, the cavity exciton-polaritons are a coherent superposition of both cavity
Brazilian Journal of Physics. Publicado em: 2006-06
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2. Exciton polariton emission from a resonantly excited GaAs microcavity
Coherent emission efficiency in a 100Å GaAs SQW microcavity was enhanced one order when pumped resonantly at 10 K, compared to the off-resonant excitation. The usual kink observed in the exciton emission linewidth as well as in the emission intensity in relation to the pump power, changes smoothly instead of the usual abrupt kink observed in the off-resonan
Brazilian Journal of Physics. Publicado em: 2004-12
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3. Polaritons de exciton em super-redes semicondutoras
Neste trabalho estudamos o espectro (modos de volume e de superfície) dos polaritons de exciton em uma super-rede binária infinita e semi-infinita (tal como, ABABA), onde um meio semicondutor (A), cuja função dielétrica depende da frequência e do vetor de onda, alterna-se com um dielétrico comum (B). Aqui, o meio A será modelado por um semicondutor d
Publicado em: 2004