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Title: Characterization of attosecond XUV pulses utilizing a broadband UV~VUV pumping
Authors: Chen, Jun
Itakura, Ryuji
Nakajima, Takashi
Author's alias: 中嶋, 隆
Issue Date: 2010
Publisher: Optical Society of America
Journal title: Optics Express
Volume: 18
Issue: 3
Start page: 2020
End page: 2035
Abstract: We propose a simple scheme to characterize attosecond extreme ultraviolet (XUV) pulses. A broadband ultraviolet (UV) ∼ vacuum ultraviolet (VUV) pump pulse creates a coherent superposition of atomic bound states, from which photoionization takes place by the time-delayed attosecond XUV probe pulse. Information on the spectral phase of the XUV pulse can be extracted from the phase offset of the interference beating in the photoelectron spectra using a standard SPIDER (spectral phase interferometry for direct electric-field reconstruction) algorithm. We further discuss the influence of the chirp and polychromaticity of the pump pulse, and show that they do not spoil the reconstruction process. Since our scheme is applicable for various simple atoms such as H, He, and Cs, etc., and capable of characterizing attosecond XUV pulses with a pulse duration of a few hundred attoseconds or even less, it can be an alternative technique to characterize attosecond XUV pulses. Specific numerical examples are presented for the H atom utilizing the 2p and 3p states.
Rights: (c) 2010 Optical Society of America
This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。
DOI(Published Version): 10.1364/OE.18.002020
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