Broadband emission and low absorption in microdisks with AlGaAs quantum wells

DOI to cite this document:: 10.5283/epub.9491

Kipp, T. ; Petter, K. ; Heyn, Christian ; Heitmann, Detlef ; Schüller, Christian

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Date of publication of this fulltext: 21 Sep 2009 07:08

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Abstract

In microphotoluminescence measurements at room temperature on Al0.2Ga0.8As/Al0.4Ga0.6As multiple quantum well microdisks, we observe a large number of whispering gallery modes in a remarkably broad energy range of about 250 meV. This is in contrast to microdisks containing InGaAs or GaAs quantum wells, where typically only one or two whispering gallery modes are observed, but similar to the ...