Efficient Observation of Narrow Isolated Photoluminescence Spectra from Spatially Localized Excitons in InGaN Quantum Wells
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概要
- 論文の詳細を見る
We report discrete photoluminescence (PL) spectra with narrow linewidths from spatially localized excitons obtained in InGaN quantum wells (QWs) that are of a similar structure to those used in conventional optical devices. A micro-PL measurement combined with submicrometer-scale fabrication techniques allows us to create a small number of excitons in a laser spot and to detect the PL from single spatially localized excitons. A sharp PL line (linewidth: 0.34 meV limited by the resolution) is clearly obtained in a 0.2 μm mesa-shaped QW, which originates from a single localized exciton. We show that the technique is a more powerful method of examining excitonic effects than previously reported methods.
- INSTITUTE OF PURE AND APPLIED PHYSICSの論文
- 2005-10-10
著者
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Gotoh Hideki
Ntt Basic Research Laboratories
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Makimoto Toshiki
Ntt Basic Laboratories Ntt Corporation
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Kobayashi Yasuyuki
Ntt Basic Research Laboratories
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Nakano Hidetoshi
Ntt Basic Research Laboratories
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Tawara Takehiko
Ntt Basic Res. Lab. Kanagawa Jpn
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Akasaka Tetsuya
NTT Basic Research Laboratories
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Tawara Takehiko
NTT Basic Research Laboratories, NTT Corporation, 3-1 Morinosato-Wakamiya, Atsugi, Kanagawa 243-0198, Japan
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Akasaka Tetsuya
NTT Basic Research Laboratories, NTT Corporation, 3-1 Morinosato-Wakamiya, Atsugi, Kanagawa 243-0198, Japan
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Kobayashi Yasuyuki
NTT Basic Research Laboratories, NTT Corporation, 3-1 Morinosato-Wakamiya, Atsugi, Kanagawa 243-0198, Japan
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Nakano Hidetoshi
NTT Basic Research Laboratories, NTT Corporation, 3-1 Morinosato-Wakamiya, Atsugi, Kanagawa 243-0198, Japan
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