Phase dynamics of [formula omitted] quantum dot semiconductor optical amplifiers

I. O‘driscoll, T. Piwonski, J. Houlihan, G. Huyet, R. J. Manning, B. Corbett

Research output: Contribution to journalArticlepeer-review

75 Citations (Scopus)


The gain and phase dynamics of [formula omitted] quantum dot amplifiers are studied using single and two-color heterodyne pump probe spectroscopy. The relaxation of the wetting layer carrier density is shown to have a strong effect on the phase dynamics of both ground and excited state transients, while having a much weaker effect on the gain dynamics. In addition, the dynamical alpha factor may also display a constant value after an initial transient. Such behavior is strongly encouraging for reduced pattern effect operation in high speed optical networks.

Original languageEnglish
Pages (from-to)428
Number of pages1
JournalApplied Physics Letters
Issue number26
Publication statusPublished - 24 Dec 2007
Externally publishedYes


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