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 SM ISO690:2012BOBRYSHEVA, A., SHMIGLYUK, M., RUSSU, S.. Optical processes due to excitons and biexcitons in a microcavity embedded quantum well. In: Proceedings of SPIE - The International Society for Optical Engineering, Ed. 1, 29 iunie - 3 iulie 1998, Moscow. Bellingham, Washington: SPIE, 1999, Vol.3734, pp. 332-338. ISBN 0819432083. ISSN 0277-786X. DOI: https://doi.org/10.1117/12.342368 |
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 Proceedings of SPIE - The International Society for Optical Engineering Vol.3734, 1999 |
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Conferința "Fundamental Aspects of Laser-matter Interaction, And, New Nonlinear Optical Materials and Physics of Low-dimensional Structures" 1, Moscow, Rusia, 29 iunie - 3 iulie 1998 | ||||||
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| DOI:https://doi.org/10.1117/12.342368 | ||||||
| Pag. 332-338 | ||||||
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A theoretical investigation of one- and two-photon absorption of weak probe light, respectively, by exciton-polaritons and biexcitons in the presence of a strong laser pulse in a planar microcavity embedded quantum well is presented. The strong pulse pumps the lower branch polariton into the biexciton and both states undergo the optical Stark splitting, which manifests oneself in the above mentioned absorption spectra. Besides the usual polariton gap an additional forbidden region for the pump and probe frequencies appear. This is due to the fact that the most part of the lower polariton branch is below the cavity photon mode energy. For this reason the optical Stark effect manifests himself better in the biexciton two-photon absorption spectrum, while the renormalized lower branch polariton is not completely revealed in the one-photon absorption. |
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| Cuvinte-cheie Engineering controlled terms Energy gap, laser pulses, Light absorption, Luminescence, optical properties, Photons Engineering uncontrolled terms Biexciton, Microcavity embedded quantum well, Optical Stark effect, Polariton Engineering main heading Semiconductor quantum wells |
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