Enhanced Second-Order Nonlinearity for THz Generation by Resonant Interaction of Exciton-Polariton Rabi Oscillations with Optical Phonons - Foton - Fonctions Optiques pour les Technologies de l'informatiON Accéder directement au contenu
Article Dans Une Revue Physical Review Letters Année : 2017

Enhanced Second-Order Nonlinearity for THz Generation by Resonant Interaction of Exciton-Polariton Rabi Oscillations with Optical Phonons

Résumé

Semiconductor microcavities in the strong-coupling regime exhibit an energy scale in the terahertz (THz) frequency range, which is fixed by the Rabi splitting between the upper and lower exciton-polariton states. While this range can be tuned by several orders of magnitude using different excitonic media, the transition between both polaritonic states is dipole forbidden. In this work, we show that, in cadmium telluride microcavities, the Rabi-oscillation-driven THz radiation is actually active without the need for any change in the microcavity design. This feature results from the unique resonance condition which is achieved between the Rabi splitting and the phonon-polariton states and leads to a giant enhancement of the second-order nonlinearity.

Dates et versions

hal-01627831 , version 1 (02-11-2017)

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Citer

Maxime Richard, Katharina Rojan, Yoan Léger, Giovanna Morigi, Anna Minguzzi. Enhanced Second-Order Nonlinearity for THz Generation by Resonant Interaction of Exciton-Polariton Rabi Oscillations with Optical Phonons. Physical Review Letters, 2017, 119 (12), pp.127401. ⟨10.1103/PhysRevLett.119.127401⟩. ⟨hal-01627831⟩
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