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Sub-10-fs population inversion in N2+ in air lasing through multiple state coupling
http://hdl.handle.net/2261/58564
http://hdl.handle.net/2261/58564cf956b7f-bd56-49ba-8fdb-ee132058276b
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
ncomms9347.pdf (684.7 kB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
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| 公開日 | 2015-10-02 | |||||
| タイトル | ||||||
| タイトル | Sub-10-fs population inversion in N2+ in air lasing through multiple state coupling | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Physical sciences | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Atomic and molecular physics | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Optical physics | |||||
| 資源タイプ | ||||||
| 資源 | http://purl.org/coar/resource_type/c_6501 | |||||
| タイプ | journal article | |||||
| 著者 |
Xu, Huailiang
× Xu, Huailiang× Lötstedt, Erik× Iwasaki, Atsushi× Yamanouchi, Kaoru |
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| 著者所属 | ||||||
| 著者所属 | Department of Chemistry, School of Science, The University of Tokyo | |||||
| 著者所属 | ||||||
| 著者所属 | State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Laser filamentation generated when intense laser pulses propagate in air has been an attractive phenomenon having a variety of potential applications such as detection and spectroscopy of gases at far distant places. It was discovered recently that the filamentation in air induces ‘lasing’, showing that electronically excited N2+ is population-inverted, exhibiting marked contrast to the common understanding that molecular ions generated by intense laser fields are prepared mostly in their electronic ground states. Here, to clarify the mechanism of the population inversion, we adopt few-cycle laser pulses, and experimentally demonstrate that the lasing at 391 nm occurs instantaneously after N2+ is produced. Numerical simulations clarify that the population inversion is realized by the post-ionization couplings among the lowest three electronic states of N2+. Our results shed light on the controversy over the mechanism of the air lasing, and show that this post-ionization coupling can be a general mechanism of the atmospheric lasing. | |||||
| 内容記述 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | UTokyo Research掲載「レーザーが空気中で増幅される機構を解明」 URI: http://www.u-tokyo.ac.jp/ja/utokyo-research/research-news/mechanism-of-air-lasing.html | |||||
| 内容記述 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | UTokyo Research "Mechanism of air lasing" URI: http://www.u-tokyo.ac.jp/en/utokyo-research/research-news/mechanism-of-air-lasing.html | |||||
| 書誌情報 |
Nature communications 巻 6, p. 8347, 発行日 2015-09-25 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 20411723 | |||||
| 書誌レコードID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AA12645905 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | info:doi/10.1038/ncomms9347 | |||||
| 権利 | ||||||
| 権利情報 | Copyright © 2015, Rights Managed by Nature Publishing Group | |||||
| 著者版フラグ | ||||||
| 値 | publisher | |||||
| 出版者 | ||||||
| 出版者 | Nature Publishing Group | |||||
| 関係URI | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | http://www.u-tokyo.ac.jp/ja/utokyo-research/research-news/mechanism-of-air-lasing.html | |||||
| 関係URI | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | http://www.u-tokyo.ac.jp/en/utokyo-research/research-news/mechanism-of-air-lasing.html | |||||
| 関係URI | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://dx.doi.org/10.1038/ncomms9347 | |||||
