Spectroscopy of atomic orbital sizes using bi-elliptical high-order harmonic generation

Eliyahu Bordo; Ofer Neufeld; Ofer Kfir; Avner Fleischer; Oren Cohen

doi:10.1103/PhysRevA.100.043419

Spectroscopy of atomic orbital sizes using bi-elliptical high-order harmonic generation

Eliyahu Bordo, Ofer Neufeld, Ofer Kfir, Avner Fleischer, Oren Cohen

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

11 Scopus citations

Abstract

We report that high-order harmonic generation (HHG) of atoms driven by ω-2ω bi-elliptical pumps exhibits a substantial sensitivity to variation of the spatial extent of the participating valence orbitals and effective potential. We identify the physical mechanisms responsible for this enhanced sensitivity through theoretical investigations in atomic He, Ne, Ar, and Kr systems using several quantum models. We demonstrate this size sensitivity experimentally by measuring significant disparities in the bi-elliptical HHG spectra of atomic Ar and Kr, which have relatively similar ionization potentials, but substantially different p-shell sizes and effective potentials. This result may be useful for ultrafast spectroscopy which is sensitive to effective potentials and orbitals.

Original language	English
Article number	043419
Journal	Physical Review A
Volume	100
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevA.100.043419
State	Published - 25 Oct 2019
Externally published	Yes

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title = "Spectroscopy of atomic orbital sizes using bi-elliptical high-order harmonic generation",

abstract = "We report that high-order harmonic generation (HHG) of atoms driven by ω-2ω bi-elliptical pumps exhibits a substantial sensitivity to variation of the spatial extent of the participating valence orbitals and effective potential. We identify the physical mechanisms responsible for this enhanced sensitivity through theoretical investigations in atomic He, Ne, Ar, and Kr systems using several quantum models. We demonstrate this size sensitivity experimentally by measuring significant disparities in the bi-elliptical HHG spectra of atomic Ar and Kr, which have relatively similar ionization potentials, but substantially different p-shell sizes and effective potentials. This result may be useful for ultrafast spectroscopy which is sensitive to effective potentials and orbitals.",

author = "Eliyahu Bordo and Ofer Neufeld and Ofer Kfir and Avner Fleischer and Oren Cohen",

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AU - Bordo, Eliyahu

AU - Neufeld, Ofer

AU - Kfir, Ofer

AU - Fleischer, Avner

AU - Cohen, Oren

PY - 2019/10/25

Y1 - 2019/10/25

N2 - We report that high-order harmonic generation (HHG) of atoms driven by ω-2ω bi-elliptical pumps exhibits a substantial sensitivity to variation of the spatial extent of the participating valence orbitals and effective potential. We identify the physical mechanisms responsible for this enhanced sensitivity through theoretical investigations in atomic He, Ne, Ar, and Kr systems using several quantum models. We demonstrate this size sensitivity experimentally by measuring significant disparities in the bi-elliptical HHG spectra of atomic Ar and Kr, which have relatively similar ionization potentials, but substantially different p-shell sizes and effective potentials. This result may be useful for ultrafast spectroscopy which is sensitive to effective potentials and orbitals.

AB - We report that high-order harmonic generation (HHG) of atoms driven by ω-2ω bi-elliptical pumps exhibits a substantial sensitivity to variation of the spatial extent of the participating valence orbitals and effective potential. We identify the physical mechanisms responsible for this enhanced sensitivity through theoretical investigations in atomic He, Ne, Ar, and Kr systems using several quantum models. We demonstrate this size sensitivity experimentally by measuring significant disparities in the bi-elliptical HHG spectra of atomic Ar and Kr, which have relatively similar ionization potentials, but substantially different p-shell sizes and effective potentials. This result may be useful for ultrafast spectroscopy which is sensitive to effective potentials and orbitals.

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JO - Physical Review A

JF - Physical Review A

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Spectroscopy of atomic orbital sizes using bi-elliptical high-order harmonic generation

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