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Start Over Author "Kourogi, Motonobu" Topic gallium arsenide
1 results on '"Kourogi, Motonobu"'

1. Spatially and spectrally resolved imaging of GaAs quantum-dot structures using near-field optical technique.

Author

Toda, Yasunori, Kourogi, Motonobu, Ohtsu, Motoichi, Nagamune, Yasushi, and Arakawa, Yasuhiko

Subjects
*GALLIUM arsenide, *QUANTUM dots, *PHOTOLUMINESCENCE, *ELECTRONS
Abstract

We present experimental result on spatially and spectrally resolved imaging of GaAs quantum dot (QD) structures using a near-field optical microscope. Three photoluminescence (PL) peaks which originate from QD, quantum well (QW), and bulk regions were observed at liquid-He temperature. Carriers were observed to diffuse effectively from the AlGaAs barriers to the QD and QW regions. The region of the intension carrier capture manifests itself by emitting a sharp PL peak, and is estimated to be about 300 nm. © 1996 American Institute of Physics. [ABSTRACT FROM AUTHOR]

Published
1996
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