Characterization of attosecond XUV pulses utilizing a broadband UV~VUV pumping

Characterization of attosecond XUV pulses utilizing a broadband UV~VUV pumping. Chen, J., Itakura, R., & Nakajima, T. Optics Express, 18(3):2020, February, 2010.

Paper doi abstract bibtex

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.

@article{chen_characterization_2010,
	title = {Characterization of attosecond {XUV} pulses utilizing a broadband {UV}{\textasciitilde}{VUV} pumping},
	volume = {18},
	issn = {1094-4087},
	url = {https://www.osapublishing.org/oe/abstract.cfm?uri=oe-18-3-2020},
	doi = {10.1364/OE.18.002020},
	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.},
	language = {en},
	number = {3},
	urldate = {2020-06-16},
	journal = {Optics Express},
	author = {Chen, Jun and Itakura, Ryuji and Nakajima, Takashi},
	month = feb,
	year = {2010},
	pages = {2020},
}

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