Open AccessPolarization gating and circularly-polarized high harmonic generation using plasmonic enhancement in metal nanostructures
Author(s) -
Anton Husakou,
F. Kelkensberg,
Joachim Herrmann,
Marc J. J. Vrakking
Publication year - 2011
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.19.025346
Subject(s) - attosecond , optics , polarization (electrochemistry) , high harmonic generation , plasmon , surface plasmon , circular polarization , harmonics , physics , gating , electric field , materials science , optoelectronics , laser , ultrashort pulse , voltage , physiology , chemistry , quantum mechanics , biology , microstrip
We investigate possibilities to utilize field enhancement by specifically designed metal nanostructures for the generation of single attosecond pulses using the polarization gating technique. We predict the generation of isolated 59-attosecond-long pulses using 15-fs pump pulses with only a 0.6 TW/cm2 intensity. Our simulations also indicate the possibility to generate previously inaccessible high-harmonics with circular polarization by using an ensemble of vertically and horizontally orientated bow-tie structures. In the numerical simulation we used an extended Lewenstein model, which includes the spatial inhomogeneity in the hot spots and collisions of electrons with the metal surface.