関西光科学研究所 >> KPSIセミナー >> Simulations on strong field driven XUV attosecond pulse amplification
セミナー
第28回KPSIセミナー
Simulations on strong field driven XUV attosecond pulse amplification
| 講演者 | Prof. Carles Serrat （Departament de Física Universitat Politècnica de Catalunya, Catalunya, Spain） |
|---|---|
| 職位 | 教授 |
| 場所 | 関西光科学研究所 管理棟 A119号室（大会議室） |
| 日時 | 2017年10月4日（水曜日）9時30分～10時30分 |
| 使用言語 | 英語 |
| 要旨 | [PDFファイル／98KB] |
Simulations on strong field driven XUV attosecond pulse amplification
Prof. Carles Serrat
（Departament de Física Universitat Politècnica de Catalunya, Catalunya, Spain）
概要
We present a theoretical study motivated and supported by experimental data on gas amplifiers driven by intense femtosecond laser pulses combined with XUV attosecond pulse trains. We identify different physical processes taking part in the interaction and show that x-ray parametric amplification dominates over others. In particular, we identify strong-field mediated intra-pulse parametric processes and XUV-mediated recombination at the single-atom level. Electron trajectories initiated by ionization of ions with 200 as XUV pulses in the presence of a strong IR pulse are investigated classically and with TDSE simulations. Absorption and gain of the XUV pulses is shown to critically depend on the relative delay between the XUV and IR pulses and the particular geometry of the system. Ongoing research might be a guide to achieve exponential growth of the signal in tabletop XUV lasers and used as a convenient seed in fully coherent plasma x-ray amplifiers.
参照：
[1] C. Serrat, "Coherent Extreme Ultraviolet Light Amplification by Strong-Field-Enhanced Forward Scattering,” Phys. Rev. Lett. 111, 1133902 (2013).
[2] C. Serrat, D. Roca, J. Seres, “Coherent amplification of attosecond light pulses in the water-window spectral region”, Optics Express 23, 4867-4872 (2015).
[3] C. Serrat, D. Roca, J. M. Budesca, J. Seres, E. Seres, B. Aurand, A. Hoffmann, S. Namba, T. Kuehl, C. Spielmann, “Avalanche of stimulated forward scattering in high harmonic generation”, Optics Express 24, 8028-8044 (2016).
[4] C. Serrat, “Intrapulse x-ray parametric amplification in high-order-harmonic generation,” Phys. Rev. A 93, 063415 (2016).
[前の記事]
第27回KPSIセミナー X-ray emission and absorption spectroscopy to study laser-initiated WDM.
[次の記事]
第29回KPSIセミナー High Average Power Ultrafast Thin-Disk Amplifiers
PDF形式のファイルをご覧いただく場合には、Adobe社が提供するAdobe Readerが必要です。
Adobe Readerをお持ちでない方は、バナーのリンク先からダウンロードしてください。（無料）
Adobe Reader provided by Adobe is required to view PDF format files.