Intraband carrier photoexcitation in quantum dot lasers

P. Moreno, M. Richard, M. Rossetti, M. Portella-Oberli, L. Li, B. Deveaud-Plédran, A. Fiore

Research output: Contribution to journalArticleAcademicpeer-review

14 Citations (Scopus)

Abstract

We unveil the role of bound-to-continuum photoexcitation of carriers as a relevant process that affects the performance of quantum dot (QD)lasers. We present the response of an InAs/InGaAs QD laser to a sub-band gap pump, showing an unexpected depletion of the emittedphotons. We relate this observation with carrier photoexcitation through additional transmission and photocurrent measurements. We providea theoretical support to the experimental data and highlight the important role of this process in the laser characteristics.
Original languageEnglish
Pages (from-to)881-885
JournalNano Letters
Volume8
Issue number3
DOIs
Publication statusPublished - 2008

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