Relaxation oscillations in the formation of a polariton condensate
| Autor: | Simos I. Tsintzos, Fabrice P. Laussy, Zacharias Hatzopoulos, Daniele Sanvitto, Milena De Giorgi, Giuseppe Gigli, Paolo Cazzato, George Deligeorgis, Dario Ballarini, Pavlos G. Savvidis |
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| Přispěvatelé: | De Giorgi, Milena, Ballarini, Dario, Cazzato, Paolo, Deligeorgis, George, Tsintzos Simos, I., Hatzopoulos, Zacharia, Savvidis Pavlos, G., Gigli, Giuseppe, Laussy Fabrice, P., Sanvitto, Daniele |
| Rok vydání: | 2013 |
| Předmět: |
Physics
QUANTIZED VORTICES Condensed Matter::Quantum Gases Condensed Matter - Mesoscale and Nanoscale Physics Condensed matter physics Terahertz radiation Condensed Matter::Other Cavity quantum electrodynamics FOS: Physical sciences General Physics and Astronomy Physics::Optics FLUID EXCITON POLARITONS Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Polariton Relaxation (physics) MICROCAVITY POLARITONS Atomic physics Excitation |
| Zdroj: | Physical review letters 112 (2014): 113602. doi:10.1103/PhysRevLett.112.113602 info:cnr-pdr/source/autori:De Giorgi, Milena; Ballarini, Dario; Cazzato, Paolo; Deligeorgis, George; Tsintzos, Simos I.; Hatzopoulos, Zacharias; Savvidis, Pavlos G.; Gigli, Giuseppe; Laussy, Fabrice P.; Sanvitto, Daniele/titolo:Relaxation oscillations in the formation of a polariton condensate/doi:10.1103%2FPhysRevLett.112.113602/rivista:Physical review letters (Print)/anno:2014/pagina_da:113602/pagina_a:/intervallo_pagine:113602/volume:112 |
| ISSN: | 1079-7114 |
| DOI: | 10.1103/PhysRevLett.112.113602 |
| Popis: | We report observation of oscillations in the dynamics of a microcavity polariton condensate formed under pulsed nonresonant excitation. While oscillations in a condensate have always been attributed to Josephson mechanisms due to a chemical potential unbalance, here we show that under some localization conditions of the condensate, they may arise from relaxation oscillations, a pervasive classical dynamics that repeatedly provokes the sudden decay of a reservoir, shutting off relaxation as the reservoir is replenished. Using nonresonant excitation, it is thus possible to obtain condensate injection pulses with a record frequency of 0.1 THz © 2014 American Physical Society. |
| Databáze: | OpenAIRE |
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