Laser dynamics in self-pulsating quantum dot systems

Huw D. Summers, Daniel R. Matthews, Peter M. Smowton, Paul Rees, Mark Hopkinson

Research output: Contribution to journalArticlepeer-review

13 Scopus citations


The inclusion of saturable absorption within QD lasers readily produces self-pulsation at RT over a wide range of injection levels when using either a floating or negative potential on the absorber section of the device. The frequency of the oscillation is however, limited to the megahertz range, and temperature-dependent measurements show a marked thermal switch-off of the pulsation below 150 K. As such, the differential changes in the optical gain show a large degree of variation according to whether electrons and holes within the dot states are localized or coupled to the WL.

Original languageEnglish (US)
Pages (from-to)1036-1041
Number of pages6
JournalJournal of Applied Physics
Issue number3
StatePublished - Feb 1 2004

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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