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Enhancement of Doppler spectroscopy to transverse direction by using optical vortex
http://hdl.handle.net/10655/0002000044
http://hdl.handle.net/10655/0002000044033408af-db01-42f2-9f20-3f642a9cc20f
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
14002_Sci.Rep.pdf (2.7 MB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
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| 公開日 | 2023-09-20 | |||||
| タイトル | ||||||
| タイトル | Enhancement of Doppler spectroscopy to transverse direction by using optical vortex | |||||
| 言語 | en | |||||
| 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 |
MINAGAWA, Hiroki
× MINAGAWA, Hiroki× YOSHIMURA, Shinji× TERASAKA, Kenichiro× ARAMAKI, Mitsutoshi |
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| 著者ID | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | ORCID 0000-0002-1583-3094 | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Tunable diode laser absorption spectroscopy (TDLAS) is a valuable method for measuring particle flow velocities in plasma. However, conventional TDLAS using a plane-wave beam is sensitive only to the laser propagation direction. This limitation is particularly unfavorable for the observation of the particle transportation perpendicularly incident on the material in the plasma–material interaction. In this paper, we show for the first time that flow measurements perpendicular to the beam direction are possible by replacing the probe beam with an optical vortex beam. Because an optical vortex has a helical wavefront, particles moving in its field experience an azimuthal Doppler shift in addition to the translational Doppler shift. Assuming a uniform gas flow across the optical vortex, the azimuthal Doppler shift of the absorption spectrum observed in the beam cross-section varies sinusoidally in the azimuthal direction. The transverse flow velocity is derived from the amplitude of this sinusoidal variation. At transverse velocities above 70 m/s, the measurement errors are found to be less than 15%, with a mean absolute percentage error of less than 8%. | |||||
| 言語 | en | |||||
| 書誌情報 |
en : Scientific Reports 巻 13, 号 Article number: 15400, 発行日 2023-09-16 |
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| 出版者 | ||||||
| 出版者 | Nature Research | |||||
| 言語 | en | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 2045-2322 | |||||
| DOI | ||||||
| 関連タイプ | isIdenticalTo | |||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | https://doi.org/10.1038/s41598-023-42517-z | |||||
| 権利 | ||||||
| 言語 | en | |||||
| 権利情報 | Copyright © 2023, The Author(s) | |||||
| 権利 | ||||||
| 言語 | en | |||||
| 権利情報 | The version of record of this article, first published in Scientific Reports, is available online at Publisher’s website: https://doi.org/10.1038/s41598-023-42517-z | |||||
| 情報源 | ||||||
| 言語 | en | |||||
| 関連名称 | Minagawa, H., Yoshimura, S., Terasaka, K. et al. Enhancement of Doppler spectroscopy to transverse direction by using optical vortex. Sci Rep 13, 15400 (2023). https://doi.org/10.1038/s41598-023-42517-z | |||||
| 関連サイト | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | https://doi.org/10.1038/s41598-023-42517-z | |||||
| 関連名称 | Publisher version | |||||
| 著者版フラグ | ||||||
| 出版タイプ | VoR | |||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
| NAIS | ||||||
| 言語 | en | |||||
| 値 | 14002 | |||||
