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Updated: Aug 5, 2026

Measurement of Scattering Nonlinearities from a Single Plasmonic Nanoparticle
Published on: January 3, 2016
Spectral features and modeling of high-order harmonics generated by sub-10-fs pulses
Villoresi1, Ceccherini, Poletto
1Istituto Nazionale Fisica della Materia, Laboratorio di Elettronica Quantistica-D.E.I., Universita di Padova, Padova, Italy.
Abstract:
Harmonic radiation generated in a neon gas jet by sub-10-fs laser pulses was investigated both experimentally and theoretically. The spectral profile of the harmonics with respect to the order, their intensity and relative spectral shifts were measured as a function of the position of the gas jet. The results point out spectral features typical of the quasi-single-cycle excitation regime. A nonadiabatic three-dimensional numerical model was developed, which provides harmonic spectra in remarkable agreement with the experiments.
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