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Superluminal-subluminal orbital angular momentum femtosecond laser focus
https://repo.qst.go.jp/records/84992
https://repo.qst.go.jp/records/84992498572b5-b52a-4aed-adb4-8bd583e02cab
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2021-12-27 | |||||
| タイトル | ||||||
| タイトル | Superluminal-subluminal orbital angular momentum femtosecond laser focus | |||||
| 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 | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Moon Jeong, Tae
× Moon Jeong, Tae× Bulanov, Sergey× Hadjisolomou, Prokopis× Timur, Esirkepov× Bulanov, Sergey× Timur, Esirkepov |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The interplay between the frequency chirping of a broadband laser pulse and the longitudinal chromatic aberration of a focusing optic introduces the superluminal or subluminal behavior to a laser focus. In this paper, we present an analytic expression for an electric field describing a superluminal or subluminal femtosecond laser focus with orbital angular momentum. The analytic expression for a superluminal or subluminal laser focus is obtained through a diffraction integral, in which the focal length is replaced by a time-dependent focal length under the paraxial approximation, and the Fourier transformation. The speed and pulse duration of a laser focus are determined by the total group delay dispersion and a chromaticity parameter defined by the longitudinal chromatic aberration of a dispersive focusing optic. It is shown that it is possible to generate a several femtosecond superluminal orbital angular momentum laser focus in the focal region. | |||||
| 書誌情報 |
Optics Express 巻 29, 号 20, p. 31665-31679, 発行日 2021-12 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 1094-4087 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1364/OE.439377 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://www.osapublishing.org/oe/fulltext.cfm?uri=oe-29-20-31665&id=459200 | |||||
