Here we report enhanced spontaneous emission intensity in AlOx/GaAs micropillars with InGaAs quantum dot (QD) ensemble emitters, measured using photoluminescence (PL). The PL from the QD ensemble was emitted into discrete transverse micropillar modes. We then measured the PL spectrum of pillars whose outer rim is replaced with an increasing number of concentric rings to form a high-order circular grating. As more periods were added to the grating, narrow transverse micropillar mode emission was suppressed and became dominated by a broad grating-extracted mode.
Enhanced mode extraction in AlO/sub x//GaAs microcavity pillars and circular gratings
(CLEO). Conference on Lasers and Electro-Optics, 2005. ; 1 ; 541-543 Vol. 1
01.01.2005
1529318 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Enhanced Mode Extraction in AlOx/GaAs Microcavity Pillars and Circular Gratings
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