Temperature dependent optical properties of single, hierarchically self-assembled GaAs/AlGaAs quantum dots

Autor:	Ulrich SM, Michler P, Benyoucef M, Rastelli A, Schmidt OG
Jazyk:	angličtina
Rok vydání:	2006
Předmět:	GaAs quantum dots Hierarchical selfassembly Single dot spectroscopy Room temperature luminescence Photon correlation 42.50.Ar 78.55.Cr 78.67.Hc Materials of engineering and construction. Mechanics of materials TA401-492
Zdroj:	Nanoscale Research Letters, Vol 1, Iss 2, Pp 172-176 (2006)
Druh dokumentu:	article
ISSN:	1931-7573 1556-276X
DOI:	10.1007/s11671-006-9019-3
Popis:	AbstractWe report on the experimental observation of bright photoluminescence emission at room temperature from single unstrained GaAs quantum dots (QDs). The linewidth of a single-QD ground-state emission (≈ 8.5 meV) is comparable to the ensemble inhomogeneous broadening (≈ 12.4 meV). At low temperature (T ≤ 40 K) photon correlation measurements under continuous wave excitation show nearly perfect single-photon emission from a single GaAs QD and reveal the single photon nature of the emitted light up to 77 K. The QD emission energies, homogeneous linewidths and the thermally activated behavior as a function of temperature are discussed.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/a510c81e00134913bb7d2ba1114ef56d Zobrazit plný text záznamu View record in DOAJ