Phase-retrieval algorithm for the characterization of broadband single attosecond pulses
- Kansas State Univ., Manhattan, KS (United States); China Academy of Engineering Physics, Mianyang (China). Laser Fusion Research Center
- Kansas State Univ., Manhattan, KS (United States)
- Kansas State Univ., Manhattan, KS (United States); Zhejiang Sci-Tech Univ., Hangzhou (China)
Recent progress in high-order harmonic generation with few-cycle mid-infrared wavelength lasers has pushed light pulses into the water-window region and beyond. These pulses have the bandwidth to support single attosecond pulses down to a few tens of attoseconds. However, the present available techniques for attosecond pulse measurement are not applicable to such pulses. Here we report a phase-retrieval method using the standard photoelectron streaking technique where an attosecond pulse is converted into its electron replica through photoionization of atoms in the presence of a time-delayed infrared laser. The iterative algorithm allows accurate reconstruction of the spectral phase of light pulses, from the extreme-ultraviolet (XUV) to soft x-rays, with pulse durations from hundreds down to a few tens of attoseconds. At the same time, the streaking laser fields, including short pulses that span a few octaves, can also be accurately retrieved. Furthermore, such well-characterized single attosecond pulses in the XUV to the soft-x-ray region are required for time-resolved probing of inner-shell electronic dynamics of matter at their own timescale of a few tens of attoseconds.
- Research Organization:
- Kansas State Univ., Manhattan, KS (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division; USDOE
- Grant/Contract Number:
- FG02-86ER13491
- OSTI ID:
- 1535733
- Alternate ID(s):
- OSTI ID: 1351032
- Journal Information:
- Physical Review A, Vol. 95, Issue 4; ISSN 2469-9926
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
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