Experimental investigation of the effect of wetting-layer states on the gain-current characteristic of quantum-dot lasers

D. R. Matthews, H. D. Summers, P. M. Smowton, M. Hopkinson

Research output: Contribution to journalArticle

147 Scopus citations

Abstract

The effect of wetting-layer states on the gain-current characteristics of quantum dot lasers was discussed. It was demonstrated that the saturation results from occupancy of high lying energy states rather than complete population inversion of the available dot states. The gain data indicated that at 100 K the dots are decoupled from the wetting layer and in this case total population inversion can be achieved.

Original languageEnglish (US)
Pages (from-to)4904-4906
Number of pages3
JournalApplied Physics Letters
Volume81
Issue number26
DOIs
StatePublished - Dec 23 2002

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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