Enhanced nonlinear double excitation of he in intense extreme ultraviolet laser fields

A. Hishikawa; M. Fushitani; Y. Hikosaka; A. Matsuda; C. N. Liu; T. Morishita; E. Shigemasa; M. Nagasono; K. Tono; T. Togashi; H. Ohashi; H. Kimura; Y. Senba; M. Yabashi; T. Ishikawa

doi:10.1103/PhysRevLett.107.243003

Enhanced nonlinear double excitation of he in intense extreme ultraviolet laser fields

A. Hishikawa^*, M. Fushitani, Y. Hikosaka, A. Matsuda, C. N. Liu, T. Morishita, E. Shigemasa, M. Nagasono, K. Tono, T. Togashi, H. Ohashi, H. Kimura, Y. Senba, M. Yabashi, T. Ishikawa

^*Corresponding author for this work

Faculty of Liberal Arts and Sciences

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

39 Scopus citations

Abstract

Nonlinear, three-photon double excitation of He in intense extreme ultraviolet free-electron laser fields (∼24.1eV, ∼5TW/cm,sup>2) is presented. Resonances to the doubly excited states converging to the He ⁺ N=3 level are revealed by the shot-by-shot photoelectron spectroscopy and identified by theoretical calculations based on the time-dependent Schrödinger equation for the two-electron atom under a laser field. It is shown that the three-photon double excitation is enhanced by intermediate Rydberg states below the first ionization threshold, giving a greater contribution to the photoionization yields than the two-photon process by more than 1 order of magnitude.

Original language	English
Article number	243003
Journal	Physical Review Letters
Volume	107
Issue number	24
DOIs	https://doi.org/10.1103/PhysRevLett.107.243003
State	Published - 2011/12/06

ASJC Scopus subject areas

General Physics and Astronomy

Access to Document

10.1103/PhysRevLett.107.243003

Cite this

Hishikawa, A., Fushitani, M., Hikosaka, Y., Matsuda, A., Liu, C. N., Morishita, T., Shigemasa, E., Nagasono, M., Tono, K., Togashi, T., Ohashi, H., Kimura, H., Senba, Y., Yabashi, M., & Ishikawa, T. (2011). Enhanced nonlinear double excitation of he in intense extreme ultraviolet laser fields. Physical Review Letters, 107(24), Article 243003. https://doi.org/10.1103/PhysRevLett.107.243003

@article{5c20d51ed4a045db91589c0a61c56900,

title = "Enhanced nonlinear double excitation of he in intense extreme ultraviolet laser fields",

abstract = "Nonlinear, three-photon double excitation of He in intense extreme ultraviolet free-electron laser fields (∼24.1eV, ∼5TW/cm,sup>2) is presented. Resonances to the doubly excited states converging to the He + N=3 level are revealed by the shot-by-shot photoelectron spectroscopy and identified by theoretical calculations based on the time-dependent Schr{\"o}dinger equation for the two-electron atom under a laser field. It is shown that the three-photon double excitation is enhanced by intermediate Rydberg states below the first ionization threshold, giving a greater contribution to the photoionization yields than the two-photon process by more than 1 order of magnitude.",

author = "A. Hishikawa and M. Fushitani and Y. Hikosaka and A. Matsuda and Liu, {C. N.} and T. Morishita and E. Shigemasa and M. Nagasono and K. Tono and T. Togashi and H. Ohashi and H. Kimura and Y. Senba and M. Yabashi and T. Ishikawa",

year = "2011",

month = dec,

day = "6",

doi = "10.1103/PhysRevLett.107.243003",

language = "英語",

volume = "107",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "24",

}

Hishikawa, A, Fushitani, M, Hikosaka, Y, Matsuda, A, Liu, CN, Morishita, T, Shigemasa, E, Nagasono, M, Tono, K, Togashi, T, Ohashi, H, Kimura, H, Senba, Y, Yabashi, M & Ishikawa, T 2011, 'Enhanced nonlinear double excitation of he in intense extreme ultraviolet laser fields', Physical Review Letters, vol. 107, no. 24, 243003. https://doi.org/10.1103/PhysRevLett.107.243003

TY - JOUR

T1 - Enhanced nonlinear double excitation of he in intense extreme ultraviolet laser fields

AU - Hishikawa, A.

AU - Fushitani, M.

AU - Hikosaka, Y.

AU - Matsuda, A.

AU - Liu, C. N.

AU - Morishita, T.

AU - Shigemasa, E.

AU - Nagasono, M.

AU - Tono, K.

AU - Togashi, T.

AU - Ohashi, H.

AU - Kimura, H.

AU - Senba, Y.

AU - Yabashi, M.

AU - Ishikawa, T.

PY - 2011/12/6

Y1 - 2011/12/6

N2 - Nonlinear, three-photon double excitation of He in intense extreme ultraviolet free-electron laser fields (∼24.1eV, ∼5TW/cm,sup>2) is presented. Resonances to the doubly excited states converging to the He + N=3 level are revealed by the shot-by-shot photoelectron spectroscopy and identified by theoretical calculations based on the time-dependent Schrödinger equation for the two-electron atom under a laser field. It is shown that the three-photon double excitation is enhanced by intermediate Rydberg states below the first ionization threshold, giving a greater contribution to the photoionization yields than the two-photon process by more than 1 order of magnitude.

AB - Nonlinear, three-photon double excitation of He in intense extreme ultraviolet free-electron laser fields (∼24.1eV, ∼5TW/cm,sup>2) is presented. Resonances to the doubly excited states converging to the He + N=3 level are revealed by the shot-by-shot photoelectron spectroscopy and identified by theoretical calculations based on the time-dependent Schrödinger equation for the two-electron atom under a laser field. It is shown that the three-photon double excitation is enhanced by intermediate Rydberg states below the first ionization threshold, giving a greater contribution to the photoionization yields than the two-photon process by more than 1 order of magnitude.

UR - http://www.scopus.com/inward/record.url?scp=83655203020&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.107.243003

DO - 10.1103/PhysRevLett.107.243003

M3 - 学術論文

C2 - 22242995

AN - SCOPUS:83655203020

SN - 0031-9007

VL - 107

JO - Physical Review Letters

JF - Physical Review Letters

IS - 24

M1 - 243003

ER -

Enhanced nonlinear double excitation of he in intense extreme ultraviolet laser fields

Abstract

ASJC Scopus subject areas

Access to Document

Fingerprint

Cite this