Macroscopic scaling of high-order harmonics generated by two-color optimized waveforms in a hollow waveguide

Cheng Jin, Kyung-Han Hong, and C. D. Lin
Phys. Rev. A 96, 013422 – Published 24 July 2017

Abstract

We present the macroscopic scaling of high harmonics generated by two-color laser pulses interacting with Ne gas in a hollow waveguide. We demonstrate that the divergence of harmonics is inversely proportional to the waveguide radius and harmonic yields are proportional to the square of the waveguide radius when the gas pressure and waveguide length are chosen to meet the phase-matching condition. We also show that harmonic yields are inversely proportional to the ionization level of the optimized two-color waveform with proper gas pressure if waveguide radius and length are fixed. These scaling relations would help experimentalists find phase-matching conditions to efficiently generate tabletop high-flux coherent soft x rays for applications.

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  • Received 25 May 2017

DOI:https://doi.org/10.1103/PhysRevA.96.013422

©2017 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & OpticalNonlinear Dynamics

Authors & Affiliations

Cheng Jin1,*, Kyung-Han Hong2, and C. D. Lin3

  • 1Department of Applied Physics, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, People's Republic of China
  • 2Department of Electrical Engineering and Computer Science and Research Laboratory of Electronics, Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
  • 3J. R. Macdonald Laboratory, Department of Physics, Kansas State University, Manhattan, Kansas 66506, USA

  • *Corresponding author: cjin@njust.edu.cn

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Vol. 96, Iss. 1 — July 2017

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