Simultaneous control of harmonic yield and energy cutoff of high-order harmonic generation using seeded plasmonically enhanced fields

Irfana N. Ansari, M. S. Mrudul, Marcelo F. Ciappina, Maciej Lewenstein, and Gopal Dixit
Phys. Rev. A 98, 063406 – Published 6 December 2018

Abstract

We study high-order harmonic generation (HHG) driven by seeded plasmonically enhanced fields. On one hand, plasmonically enhanced fields have shown a great potential to extend the HHG cutoff, an instrumental prerequisite for the generation of attosecond pulses. On another hand, the use of XUV seeds appears to have a considerable potential to improve the HHG conversion efficiency, which is typically modest when a unique fundamental laser pulse is employed. By mixing these two sources, we show it is possible to simultaneously boost the HHG cutoff and to increase the harmonic photon flux. The combination of these features potentially enables one to generate intense and spectrally broad attosecond pulse trains.

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  • Received 16 October 2018

DOI:https://doi.org/10.1103/PhysRevA.98.063406

©2018 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & Optical

Authors & Affiliations

Irfana N. Ansari1, M. S. Mrudul1, Marcelo F. Ciappina2, Maciej Lewenstein3,4, and Gopal Dixit1,*

  • 1Department of Physics, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
  • 2Institute of Physics of the ASCR, ELI-Beamlines Project, Na Slovance 2, 18221 Prague, Czech Republic
  • 3ICFO – Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, Av. Carl Friedrich Gauss 3, 08860 Castelldefels (Barcelona), Spain
  • 4ICREA, Pg. Lluís Companys 23, 08010 Barcelona, Spain

  • *gdixit@phy.iitb.ac.in

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Vol. 98, Iss. 6 — December 2018

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