@inproceedings{a66bab2af70b46b18004097432b75c90,
title = "Cooling of radiative quantum dot excitons by THz-radiation",
abstract = "Yusa et al. reported an anomalous cooling of radiative quantum dot (QD) excitons by THz-radiation in [Proc. 24th ICPS, 1083 (1998)] We have analyzed this experiment using continuum elasticity, multi-band k · p and spin-resolved Monte-Carlo methods. We show that the unexpected discovery is related to hole relaxation via piezo-electric potential minima, induced in the QD sample by InP stressor islands. The THz-radiation gives rise to a drift of dark excitons from the piezoelectric minima to radiative states in the deformation potential minimum. This increases the QD ground state luminescence at the expense of the luminescence from higher QD states. We reproduce also the delayed flash of QD ground state luminescence when a THz-radiation pulse hits the sample even ∼ls after switchins off the carrier seneration.",
keywords = "Cooling, Intra-band, Photoluminescence, Quantum dot, Relaxation",
author = "Fredrik Boxberg and Jukka Tulkki and Go Yusa and Hiroyuki Sakaki",
year = "2007",
month = dec,
day = "1",
doi = "10.1063/1.2730232",
language = "English",
isbn = "9780735403970",
series = "AIP Conference Proceedings",
pages = "999--1000",
booktitle = "Physics of Semiconductors - 28th International Conference on the Physics of Semiconductors, ICPS 2006, Part A and B",
note = "28th International Conference on the Physics of Semiconductors, ICPS 2006 ; Conference date: 24-07-2006 Through 28-07-2006",
}