Arrays of site-controlled, pyramidal InGaAs/GaAs quantum dots (QDs) grown by organo-metallic chemical vapour deposition with densities comparable to those of self-assembled QDs (5 × 109 cm−2) are demonstrated. The QDs exhibit high quality photoluminescence spectra with inhomogeneous broadening of only 6.5 meV. The QD dipole moment was estimated through the analysis of time-resolved photoluminescence measurements. Such ordered QD arrays should be useful for applications in active nanophotonic systems such as QD lasers, modulators and switches requiring high overlap of the optical modes with the QD active region.
Dense arrays of ordered pyramidal quantum dots with narrow linewidth photoluminescence spectra / Surrente, A; Gallo, P; Felici, Marco; Dwir, B; Rudra, A; Kapon, E.. - In: NANOTECHNOLOGY. - ISSN 0957-4484. - 20:(2009), p. 415205. [10.1088/0957-4484/20/41/415205]
Dense arrays of ordered pyramidal quantum dots with narrow linewidth photoluminescence spectra
SURRENTE A;FELICI, Marco;
2009
Abstract
Arrays of site-controlled, pyramidal InGaAs/GaAs quantum dots (QDs) grown by organo-metallic chemical vapour deposition with densities comparable to those of self-assembled QDs (5 × 109 cm−2) are demonstrated. The QDs exhibit high quality photoluminescence spectra with inhomogeneous broadening of only 6.5 meV. The QD dipole moment was estimated through the analysis of time-resolved photoluminescence measurements. Such ordered QD arrays should be useful for applications in active nanophotonic systems such as QD lasers, modulators and switches requiring high overlap of the optical modes with the QD active region.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
