Abstract

The high harmonic generation in periodically corrugated submicrometer waveguides is studied numerically. Plasmonic field enhancement in the vicinity of the corrugations allows us to use low pump intensities. Simultaneously, periodic placement of the corrugations leads to quasi-phase-matching and a corresponding increase of high harmonic efficiency. Optimization of waveguide geometry is performed, and the resulting spectra are analyzed by the means of a $(1+1)\mathrm{D}$ numerical model.

© 2016 Optical Society of America

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