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Ultrafast lasing due to electron-hole plasma in ZnO nano-multipods
http://hdl.handle.net/10131/7250
http://hdl.handle.net/10131/7250cae58f10-cdff-4f56-92f9-eb4d82eb9ec5
名前 / ファイル | ライセンス | アクション |
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JPhysCM_21_064211_09.pdf (2.3 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2010-08-30 | |||||
タイトル | ||||||
タイトル | Ultrafast lasing due to electron-hole plasma in ZnO nano-multipods | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
Mitsubori, S.
× Mitsubori, S.× Katayama, I.× Lee, S. H.× Yao, T.× Takeda, Jun |
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著者(ヨミ) | ||||||
識別子Scheme | WEKO | |||||
識別子 | 9 | |||||
識別子Scheme | e-Rad | |||||
識別子URI | https://kaken.nii.ac.jp/ja/search/?qm=60202165 | |||||
識別子 | 60202165 | |||||
姓名 | タケダ, ジュン | |||||
著者別名 | ||||||
識別子Scheme | WEKO | |||||
識別子 | 9 | |||||
識別子Scheme | e-Rad | |||||
識別子URI | https://kaken.nii.ac.jp/ja/search/?qm=60202165 | |||||
識別子 | 60202165 | |||||
姓名 | 武田, 淳 | |||||
著者所属 | ||||||
Department of Physics, Yokohama National University, Yokohama 240-8501, Japan | ||||||
著者所属 | ||||||
Interdisciplinary Research Center, Yokohama National University, Yokohama 240-8501, Japan | ||||||
著者所属 | ||||||
Center for Interdisciplinary Research, Tohoku University, Sendai 980-8578, Japan | ||||||
著者所属 | ||||||
Center for Interdisciplinary Research, Tohoku University, Sendai 980-8578, Japan | ||||||
著者所属 | ||||||
Department of Physics, Yokohama National University, Yokohama 240-8501, Japan | ||||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Dynamics of stimulated emission and ultrafast lasing in ZnO nano-multipods has been investigated with femtosecond optical Kerr shutter technique. Under band-to-band excitation with high density, stimulated emission is observed around 395-400 nm with a mode-like structure. The stimulated emission emerges with an onset time of ~2 ps and then the intensity gradually decreases with time having a blue-shift and a spectral narrowing. The characteristics of the blue-shift and spectral narrowing suggest that not only recovery of bandgap renormalization but also conversion from an electron-hole plasma (EHP) state to high density excitonic state takes place as the carrier density decreases due to recombination of electrons with holes. The mode-like structure observed strongly indicates that a high quality resonant cavity is formed between the two facets toward the leg length direction of individual nano-multipod. These results show that the ultrafast lasing observed around 395-400 nm in ZnO nano-multipods comes from population inversion in the EHP regime. We also found that the initial carrier distribution of the EHP regime in nano-multipods is much wider than that in ZnO thin films, implying that the carrier diffusion might be suppressed by their nano-size structure. | |||||
書誌情報 |
Journal of physics. Condensed matter. 巻 21, 号 6, p. 064211, 発行日 2009-02-11 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 09538984 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA10672168 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1088/0953-8984/21/6/064211 | |||||
フォーマット | ||||||
内容記述タイプ | Other | |||||
内容記述 | application/pdf | |||||
著者版フラグ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
出版者 | ||||||
出版者 | Institute of Physics | |||||
資源タイプ | ||||||
内容記述タイプ | Other | |||||
内容記述 | postprint |