Ultrafast radiative decay of polaritons in an interface layer with strong excitonic response
| Autor: | Tatiana V. Teperik, T.Yu. Bagaeva, Vyacheslav V. Popov, Norman J. M. Horing, Yüksel Ayaz |
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| Rok vydání: | 2005 |
| Předmět: |
Physics
Condensed matter physics Condensed Matter::Other business.industry Exciton Biophysics Physics::Optics General Chemistry Condensed Matter Physics Biochemistry Atomic and Molecular Physics and Optics Semiconductor Dispersion (optics) Polariton Radiative transfer Wave vector business Ultrashort pulse Quantum well |
| Zdroj: | Journal of Luminescence. 112:225-229 |
| ISSN: | 0022-2313 |
| DOI: | 10.1016/j.jlumin.2004.09.061 |
| Popis: | We have demonstrated theoretically that radiative polaritons in an interface layer having strong excitonic response exhibit appreciable frequency dependence on an in-plane wave vector, k ∥ , in the region of the ω–k ∥ dispersion plane between the “light-lines” of the media to either side of the layer. We predict ultrafast radiative decay of such polaritons with lifetimes as low as 10 fs in slabs of organic–inorganic PbI-based layered perovskite-type semiconductors. We confirm an unusual physical feature of the radiative polaritons by determining the linear electromagnetic response of the excitonic layer to a current δ-pulse. |
| Databáze: | OpenAIRE |
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