Resonance-enhanced harmonic generation in nanoparticle-containing plasmas

Abstract

We demonstrate the enhancement of a single harmonic of ultrashort pulses in nanoparticle-containing plasmas. The application of three laser-produced nanoparticle-containing plasmas (In2O3, Sn and Mn2O3) allowed the efficient generation of lower-order harmonics and the resonance enhancement of single (13th, 17th and 33rd) harmonics. The comparison of the harmonic spectra obtained using the plasmas produced on the bulk and nanoparticle-containing surfaces showed that similar enhancement of single harmonics occurs in the case of strong excitation of the latter targets, while weaker ablation of nanoparticles led to generation of featureless lower-order harmonic spectra.

Identifiers

DOI

10.1088/0953-4075/48/16/165401

Citations and references