Title :
Near-field imaging and spectroscopy of localized and delocalized excitons in semiconductor nanostructures
Author :
Lienau, C. ; Intonti, F. ; Emiliani, V. ; Elasaesser, T. ; Savona, V. ; Runge, E. ; Zimmermann, R. ; Notzel, R. ; Ploog, K.H.
Author_Institution :
Max-Born-Inst. fur Nichtlineare Optik und Kurzzeitspektroskopie, Berlin, Germany
Abstract :
We resolve the characteristic emission features of excitons in a single GaAs quantum wire using near-field photoluminescence spectroscopy. We report emission from both localized excitons and quasi-one-dimensional excitons that are delocalized over a length of up to several /spl mu/m.
Keywords :
III-V semiconductors; excitons; gallium arsenide; localised states; photoluminescence; semiconductor quantum wires; GaAs; GaAs quantum wire; delocalized excitons; localized excitons; localized states; near-field PL spectroscopy; near-field imaging; photoluminescence; quasi-one-dimensional excitons; semiconductor nanostructures; two-energy autocorrelation function; Excitons; Gallium arsenide; Laboratories; Lenses; Optical imaging; Semiconductor nanostructures; Spatial resolution; Spectroscopy; Stimulated emission; Wire;
Conference_Titel :
Lasers and Electro-Optics, 2001. CLEO/Pacific Rim 2001. The 4th Pacific Rim Conference on
Conference_Location :
Chiba, Japan
Print_ISBN :
0-7803-6738-3
DOI :
10.1109/CLEOPR.2001.967795
