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Title: Two color laser fields for studying the Cooper minimum with phase-matched high-order harmonic generation

We experimentally study the observation of the Cooper minimum in a semi-infinite argon-filled gas cell using two-color laser fields at wavelengths of 1400 nm and 800 nm. The experimental results show that the additional 800 nm field can change the macroscopic phase-matching condition through change of the atomic dipole phase associated with the electron in the continuum state and that this approach can be used to control the appearance of the Cooper minimum in the high-order harmonic spectrum in order to study the electronic structure of atoms and molecules.
Authors:
; ; ;  [1]
  1. ARC Centre of Excellence for Coherent X-Ray Science and Centre for Quantum and Optical Science, Swinburne University of Technology, Melbourne, Vic 3122 (Australia)
Publication Date:
OSTI Identifier:
22304385
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 115; Journal Issue: 20; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; COLOR; DIPOLES; ELECTRONIC STRUCTURE; ELECTRONS; HARMONIC GENERATION; LASER RADIATION; MOLECULES; SPECTRA; WAVELENGTHS