Visualization of space charge field effect on excitons in a GaAs quantum dot by near-field optical wavefunction mapping

Yoshiaki Sugimoto; Nobuhiro Tsumori; Shintaro Nomura; Toshiharu Saiki

doi:10.1007/s10043-009-0050-3

Visualization of space charge field effect on excitons in a GaAs quantum dot by near-field optical wavefunction mapping

Yoshiaki Sugimoto, Nobuhiro Tsumori, Shintaro Nomura, Toshiharu Saiki

電気情報工学科

研究成果: Article › 査読

9 被引用数 (Scopus)

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Near-field photoluminescence (PL) imaging spectroscopy was used to investigate multi-exciton and charged-exciton states confined in a single GaAs interface fluctuation quantum dot. We determined the origin of peaks in the PL spectra by employing a wavefunction mapping technique. We observed distortion of the exciton wavefunction due to the electric field produced by an excess electron at a nearby confined state. Near-field wavefunction mapping was demonstrated to be a powerful tool for visualizing the local environment, which affects the emission properties of quantum dots.

本文言語	English
ページ（範囲）	269-273
ページ数	5
ジャーナル	Optical Review
巻	16
号	3
DOI	https://doi.org/10.1007/s10043-009-0050-3
出版ステータス	Published - 2009 5月

ASJC Scopus subject areas

原子分子物理学および光学

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10.1007/s10043-009-0050-3

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title = "Visualization of space charge field effect on excitons in a GaAs quantum dot by near-field optical wavefunction mapping",

abstract = "Near-field photoluminescence (PL) imaging spectroscopy was used to investigate multi-exciton and charged-exciton states confined in a single GaAs interface fluctuation quantum dot. We determined the origin of peaks in the PL spectra by employing a wavefunction mapping technique. We observed distortion of the exciton wavefunction due to the electric field produced by an excess electron at a nearby confined state. Near-field wavefunction mapping was demonstrated to be a powerful tool for visualizing the local environment, which affects the emission properties of quantum dots.",

keywords = "Charged exciton, Finite-difference time-domain calculation method, Interfacial fluctuation quantum dot, Multi exciton, Near-field scanning microscope, Photoluminescence imaging spectroscopy",

author = "Yoshiaki Sugimoto and Nobuhiro Tsumori and Shintaro Nomura and Toshiharu Saiki",

year = "2009",

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doi = "10.1007/s10043-009-0050-3",

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T1 - Visualization of space charge field effect on excitons in a GaAs quantum dot by near-field optical wavefunction mapping

AU - Sugimoto, Yoshiaki

AU - Tsumori, Nobuhiro

AU - Nomura, Shintaro

AU - Saiki, Toshiharu

PY - 2009/5

Y1 - 2009/5

N2 - Near-field photoluminescence (PL) imaging spectroscopy was used to investigate multi-exciton and charged-exciton states confined in a single GaAs interface fluctuation quantum dot. We determined the origin of peaks in the PL spectra by employing a wavefunction mapping technique. We observed distortion of the exciton wavefunction due to the electric field produced by an excess electron at a nearby confined state. Near-field wavefunction mapping was demonstrated to be a powerful tool for visualizing the local environment, which affects the emission properties of quantum dots.

AB - Near-field photoluminescence (PL) imaging spectroscopy was used to investigate multi-exciton and charged-exciton states confined in a single GaAs interface fluctuation quantum dot. We determined the origin of peaks in the PL spectra by employing a wavefunction mapping technique. We observed distortion of the exciton wavefunction due to the electric field produced by an excess electron at a nearby confined state. Near-field wavefunction mapping was demonstrated to be a powerful tool for visualizing the local environment, which affects the emission properties of quantum dots.

KW - Charged exciton

KW - Finite-difference time-domain calculation method

KW - Interfacial fluctuation quantum dot

KW - Multi exciton

KW - Near-field scanning microscope

KW - Photoluminescence imaging spectroscopy

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VL - 16

SP - 269

EP - 273

JO - Optical Review

JF - Optical Review

IS - 3

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Visualization of space charge field effect on excitons in a GaAs quantum dot by near-field optical wavefunction mapping

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