| HAL : hal-00174731, version 1 |
| arXiv : 0709.3894 |
| Fiche détaillée | Récupérer au format |
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| Electrically injected cavity polaritons |
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Luca Sapienza 1Angela Vasanelli 1 |
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| (25/09/2007) |
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| We have realised a semiconductor quantum structure that produces electroluminescence while operating in the light-matter strong coupling regime. The mid-infrared light emitting device is composed of a quantum cascade structure embedded in a planar microcavity, based on the GaAs/AlGaAs material system. At zero bias, the structure is characterised using reflectivity measurements which show, up to room temperature, a wide polariton anticrossing between an intersubband transition and the resonant cavity photon mode. Under electrical injection the spectral features of the emitted light change drastically, as electrons are resonantly injected in a reduced part of the polariton branches. Our experiment demonstrates that electrons can be selectively injected into polariton states up to room temperature. |
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| 1 : | Matériaux et Phénomènes Quantiques (MPQ) |
| CNRS : UMR7162 – CNRS : FR2437 – Université Paris VII - Paris Diderot | |
| 2 : | Institut d'électronique fondamentale (IEF) |
| CNRS : UMR8622 – Université Paris XI - Paris Sud | |
| 3 : | Laboratoire de photonique et de nanostructures (LPN) |
| CNRS : UPR20 | |
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| Laboratoire MPQ (Université Paris Diderot), IEF (Université Paris Sud), LPN (CNRS), CNRS |
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| Domaine | : | Physique/Matière Condensée/Autre Physique/Physique Quantique |
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| light-matter strong coupling regime – intersubband polaritons – electroluminescence – LED – tunnelling |
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| Liste des fichiers attachés à ce document : | ||||||||||
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| hal-00174731, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00174731 | |
| oai:hal.archives-ouvertes.fr:hal-00174731 | |
| Contributeur : Luca Sapienza | |
| Soumis le : Mardi 25 Septembre 2007, 10:34:46 | |
| Dernière modification le : Mardi 25 Septembre 2007, 10:36:31 | |