Attosecond streaking in the water window: A new regime of attosecond pulse characterization

Seth L. Cousin; Nicola Di Palo; Bárbara Buades; Stephan M. Teichmann; M. Reduzzi; M. Devetta; A. Kheifets; G. Sansone; Jens Biegert

doi:10.1103/PhysRevX.7.041030

Attosecond streaking in the water window: A new regime of attosecond pulse characterization

Seth L. Cousin, Nicola Di Palo, Bárbara Buades, Stephan M. Teichmann, M. Reduzzi, M. Devetta, A. Kheifets, G. Sansone, Jens Biegert

Research output: Contribution to journal › Article › peer-review

88 Citations (Scopus)

Abstract

We report on the first streaking measurement of water-window attosecond pulses generated via highharmonic generation, driven by sub-2-cycle, carrier-to-envelope-phase-stable, 1850-nm laser pulses. Both the central photon energy and the energy bandwidth far exceed what has been demonstrated thus far, warranting the investigation of the attosecond streaking technique for the soft-x-ray regime and the limits of the FROGCRAB retrieval algorithm under such conditions. We also discuss the problem of attochirp compensation and issues regarding much lower photoionization cross sections compared with the extreme ultraviolet in addition to the fact that several shells of target gases are accessed simultaneously. Based on our investigation, we caution that the vastly different conditions in the soft-x-ray regime warrant a diligent examination of the fidelity of the measurement and the retrieval procedure.

Original language	English
Article number	041030
Journal	Physical Review X
Volume	7
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevX.7.041030
Publication status	Published - 2 Nov 2017

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abstract = "We report on the first streaking measurement of water-window attosecond pulses generated via highharmonic generation, driven by sub-2-cycle, carrier-to-envelope-phase-stable, 1850-nm laser pulses. Both the central photon energy and the energy bandwidth far exceed what has been demonstrated thus far, warranting the investigation of the attosecond streaking technique for the soft-x-ray regime and the limits of the FROGCRAB retrieval algorithm under such conditions. We also discuss the problem of attochirp compensation and issues regarding much lower photoionization cross sections compared with the extreme ultraviolet in addition to the fact that several shells of target gases are accessed simultaneously. Based on our investigation, we caution that the vastly different conditions in the soft-x-ray regime warrant a diligent examination of the fidelity of the measurement and the retrieval procedure.",

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AU - Cousin, Seth L.

AU - Di Palo, Nicola

AU - Buades, Bárbara

AU - Teichmann, Stephan M.

AU - Reduzzi, M.

AU - Devetta, M.

AU - Kheifets, A.

AU - Sansone, G.

AU - Biegert, Jens

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AB - We report on the first streaking measurement of water-window attosecond pulses generated via highharmonic generation, driven by sub-2-cycle, carrier-to-envelope-phase-stable, 1850-nm laser pulses. Both the central photon energy and the energy bandwidth far exceed what has been demonstrated thus far, warranting the investigation of the attosecond streaking technique for the soft-x-ray regime and the limits of the FROGCRAB retrieval algorithm under such conditions. We also discuss the problem of attochirp compensation and issues regarding much lower photoionization cross sections compared with the extreme ultraviolet in addition to the fact that several shells of target gases are accessed simultaneously. Based on our investigation, we caution that the vastly different conditions in the soft-x-ray regime warrant a diligent examination of the fidelity of the measurement and the retrieval procedure.

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Attosecond streaking in the water window: A new regime of attosecond pulse characterization

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