Polariton laser using single micropillar GaAs-GaAlAs semiconductor cavities

Daniele Bajoni, Pascale Senellart, Esther Wertz, Isabelle Sagnes, Audrey Miard, Aristide Lemaître, Jacqueline Bloch

Research output: Contribution to journalArticlepeer-review

Abstract

Polariton lasing is demonstrated on the zero-dimensional states of single GaAs/GaAlAs micropillar cavities. Under nonresonant excitation, the measured polariton ground-state occupancy is found as large as 104. Changing the spatial excitation conditions, competition between several polariton lasing modes is observed, ruling out Bose-Einstein condensation. When the polariton state occupancy increases, the emission blueshift is the signature of self-interaction within the half-light half-matter polariton lasing mode.

Original languageEnglish
Article number047401
JournalPhysical Review Letters
Volume100
Issue number4
DOIs
Publication statusPublished - 28 Jan 2008
Externally publishedYes

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