Ultrafast Carrier Redistribution in Single Quantum Dots Mediated by Wetting-Layer Dynamics

M Johnsson, DR Góngora, JP Martinez-Pastor, T Volz… - Physical review applied, 2019 - APS
Optical studies of single self-assembled semiconductor quantum dots (QDs) have been a
topic of intensive investigation over the past two decades. Due to their solid-state nature …

Nanoengineered quantum dot medium for space optoelectronic devices

S Oktyabrsky, V Tokranov, M Yakimov… - Nanophotonics and …, 2012 - spiedigitallibrary.org
Resistance to temperature and ionizing radiation of space optoelectronic devices can be
improved through control of carrier kinetics in nanoscale systems. Recent results in the …

New physics and devices based on self-assembled semiconductor quantum dots

DJ Mowbray, MS Skolnick - Journal of Physics D: Applied Physics, 2005 - iopscience.iop.org
Self-assembled semiconductor quantum dots (QDs) exhibit fully quantized electronic states
and high radiative efficiencies. This makes them highly suitable both for fundamental …

Optical quality of InAs/InP quantum dots on distributed Bragg reflector emitting at 3rd telecom window grown by molecular beam epitaxy

T Smołka, K Posmyk, M Wasiluk, P Wyborski… - Materials, 2021 - mdpi.com
We present an experimental study on the optical quality of InAs/InP quantum dots (QDs).
Investigated structures have application relevance due to emission in the 3rd …

800 meV localization energy in GaSb/GaAs/Al0. 3Ga0. 7As quantum dots

T Nowozin, L Bonato, A Högner, A Wiengarten… - Applied Physics …, 2013 - pubs.aip.org
The localization energies, capture cross sections, and storage times of holes in GaSb
quantum dots (QDs) are measured for three GaSb/GaAs QD ensembles with different QD …

Low-temperature carrier dynamics in MBE-grown InAs/GaAs single-and multi-layered quantum dots investigated via photoluminescence and terahertz time-domain …

AE De Los Reyes, JD Vasquez… - Optical Materials …, 2019 - opg.optica.org
The photocarrier dynamics in molecular beam epitaxy (MBE)-grown single-(SLQD) and multi-
layered (MLQD) InAs/GaAs quantum dots were studied. Photoluminescence (PL) …

Improving optical gain performance in semiconductor quantum dots via coupled quantum shells

EA Dias, JI Saari, P Tyagi… - The Journal of Physical …, 2012 - ACS Publications
Semiconductor quantum dots are of interest as optical gain media for lasing applications.
Here we report on efficient, broad bandwidth optical gain in the CdSe/ZnS/CdSe quantum …

Ultrafast carrier dynamics in InGaAs quantum dot materials and devices

P Borri, S Schneider, W Langbein… - Journal of Optics A …, 2006 - iopscience.iop.org
In this paper we review the subject of dephasing processes and population dynamics in self-
assembled InGaAs/GaAs quantum dot materials and devices. Our aim is to give a …

Many-particle effects in type II quantum dots

L Müller-Kirsch, R Heitz, A Schliwa, O Stier… - Applied Physics …, 2001 - pubs.aip.org
Many-particle effects are investigated in the photoluminescence of type II GaSb/GaAs
quantum dots (QDs). With increasing excitation density, ie, exciton occupation, the …

GaAs/GaP quantum dots: Ensemble of direct and indirect heterostructures with room temperature optical emission

S Dadgostar, J Schmidtbauer, T Boeck, A Torres… - Applied Physics …, 2016 - pubs.aip.org
We describe the optical emission and the carrier dynamics of an ensemble of self-
assembled GaAs quantum dots embedded in GaP (001). The QD formation is driven by the …