TITLE

Hidden resonant excitation of photoluminescence in bilayer arrays of InAs/GaAs quantum dots

AUTHOR(S)
Mazur, Yu. I.; Wang, Z. M.; Salamo, G. J.; Xiao, Min; Tarasov, G. G.; Zhuchenko, Z. Ya.; Masselink, W. T.; Kissel, H.
PUB. DATE
September 2003
SOURCE
Applied Physics Letters;9/1/2003, Vol. 83 Issue 9, p1866
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Photoluminescence (PL) of self-organized quantum dots (QDs) in bilayer InAs/GaAs structures is studied with a fixed seed layer and spacer, but variable second-layer coverage. Careful line shape analysis reveals modulation in the high-energy tail of the seed-layer PL spectrum. The oscillation-like behavior is reproducible with variations in both the temperature and optical excitation energy. These oscillations are attributed to carrier relaxation through inelastic phonon scattering from the wetting layer to the QD excited states. © 2003 American Institute of Physics.
ACCESSION #
10664994

 

Related Articles

  • Broadband Purcell enhanced emission dynamics of quantum dots in linear photonic crystal waveguides. Laucht, A.; Günthner, T.; Pütz, S.; Saive, R.; Frédérick, S.; Hauke, N.; Bichler, M.; Amann, M.-C.; Holleitner, A. W.; Kaniber, M.; Finley, J. J. // Journal of Applied Physics;Nov2012, Vol. 112 Issue 9, p093520 

    The authors investigate the spontaneous emission dynamics of self-assembled InGaAs quantum dots embedded in GaAs photonic crystal waveguides. For an ensemble of dots coupled to guided modes in the waveguide, we report spatially, spectrally, and time-resolved photoluminescence measurements,...

  • Strongly coupled single quantum dot in a photonic crystal waveguide cavity. Brossard, F. S. F.; Xu, X. L.; Williams, D. A.; Hadjipanayi, M.; Hugues, M.; Hopkinson, M.; Wang, X.; Taylor, R. A. // AIP Conference Proceedings;12/22/2011, Vol. 1399 Issue 1, p1017 

    Cavities embedded in photonic crystal waveguides offer a promising route towards large scale integration of coupled resonators for quantum electrodynamics applications. Here a strongly coupled system consisting of a single quantum dot and a cavity formed by the local width modulation of a...

  • Nonlinear dynamics of doped semiconductor quantum dot lasers. Lüdge, K.; Schöll, E. // European Physical Journal D -- Atoms, Molecules, Clusters & Opti;Jul2010, Vol. 58 Issue 2, p167 

    We discuss the influence of wetting layer doping on the turn-on dynamics of a quantum dot (QD) laser by using a microscopically based rate equation model which separately treats the dynamics of electrons and holes. As the carrier-carrier scattering rates depend nonlinearly on the wetting layer...

  • Spin-Dependent Transient Effects in Electron Transport in the Quantum Dot System. Parafiniuk, P.; Taranko, R. // Acta Physica Polonica, A.;Nov2009, Vol. 116 Issue 5, p844 

    We study the effects of the Coulomb interaction U between the electrons of opposite spins localized in the quantum dot on the time-dependent electron transport through the quantum dot coupled with two non-magnetic leads. We calculate the transient spin-dependent current generated by a pulsed...

  • Quality factors of qubit rotations in single semiconductor quantum dots. Wang, Q. Q.; Muller, A.; Bianucci, P.; Shih, C. K.; Xue, Q. K. // Applied Physics Letters;7/18/2005, Vol. 87 Issue 3, p031904 

    The quality factors of quantum bit (qubit) rotations in single self-assembled quantum dots were investigated using photoluminescence spectroscopy. Rotations with azimuthal angle [lowercase_phi_synonym] along the equator of the qubit sphere were implemented by varying the time delay between two...

  • Photoinduced fluorescence intensity oscillation in a reaction-diffusion cell containing a colloidal quantum dot dispersion. Komoto, Atsushi; Maenosono, Shinya // Journal of Chemical Physics;9/21/2006, Vol. 125 Issue 11, p114705 

    The nonlinear spontaneous oscillation of photoluminescence (PL) intensity in an ensemble of semiconductor quantum dots (QDs), which differs from the fluorescence intermittency of a single QD, is investigated. The PL intensity in a QD dispersion slowly oscillates with time under continuous...

  • Quantum efficiency and oscillator strength of site-controlled InAs quantum dots. Albert, F.; Stobbe, S.; Schneider, C.; Heindel, T.; Reitzenstein, S.; Höfling, S.; Lodahl, P.; Worschech, L.; Forchel, A. // Applied Physics Letters;4/12/2010, Vol. 96 Issue 15, p151102 

    We report on time-resolved photoluminescence spectroscopy to determine the oscillator strength (OS) and the quantum efficiency (QE) of site-controlled InAs quantum dots nucleating on patterned nanoholes. These two quantities are determined by measurements on site-controlled quantum dot (SCQD)...

  • Parametric polariton scattering in single micropillar microcavities. Bajoni, D.; Senellart, P.; Peter, E.; Smirr, J. L.; Sagnes, I.; Lemaître, A.; Bloch, J. // AIP Conference Proceedings;2007, Vol. 893 Issue 1, p1143 

    Three dimensional microresonators (micropillars) operating in the strong coupling regime were studied by photoluminescence. Parametric oscillations of 0-dimensional polaritons are evidenced on a single micropillar. Signal and idler beam are of comparable intensities, a promising result in the...

  • Role of quantum confinement in luminescence efficiency of group IV nanostructures. Barbagiovanni, E. G.; Lockwood, D. J.; Rowell, N. L.; Filho, R. N. Costa; Berbezier, I.; Amiard, G.; Favre, L.; Ronda, A.; Faustini, M.; Grosso, D. // Journal of Applied Physics;2014, Vol. 115 Issue 4, p1 

    Experimental results obtained previously for the photoluminescence efficiency (PLeff) of Ge quantum dots (QDs) are theoretically studied. A log-log plot of PLeff versus QD diameter (D) resulted in an identical slope for each Ge QD sample only when EG ~ (D² + D)-1 . We identified that above D...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics