Selective zoning of high harmonic emission using counter-propagating light | Zendy

J. Peatross | Zendy; Sergei Voronov | Zendy; I. P. Prokopovich | Zendy

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Selective zoning of high harmonic emission using counter-propagating light

Author(s) -

J. Peatross,

Sergei Voronov,

I. P. Prokopovich

Publication year - 1997

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.1.000114

Subject(s) - optics , harmonics , physics , harmonic , coherence (philosophical gambling strategy) , laser , phase (matter) , wavelength , voltage , acoustics , quantum mechanics

High harmonic production can be dramatically increased by utilizing an interaction region much longer than a coherence length. Counter-propagating light pulses can be used to disrupt the out-of-phase harmonic emission from selected zones in the focus so that the remaining emission builds constructively. Counter-propagating light creates a standing field modulation repeating over a half laser wavelength in which phase cancellations for harmonic emission occur. A simple power-law model is used to demonstrate how such pulses can be designed to counteract geometrical phase mismatches and improve emission for individual harmonics by more than two orders of magnitude.

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