Generation of even and odd high harmonics in resonant metasurfaces using single and multiple ultra-intense laser pulses
Abstract
High harmonic generation (HHG) opens a window on the fundamental science of strong-field light-mater interaction and serves as a key building block for attosecond optics and metrology. Resonantly enhanced HHG from hot spots in nanostructures is an attractive route to overcoming the well-known limitations of gases and bulk solids. We demonstrate a nanoscale platform for highly efficient HHG driven by strong mid-infrared laser pulses: an ultra-thin resonant gallium phosphide (GaP) metasurface. The wide bandgap and the lack of inversion symmetry of the GaP crystal enable the generation of even and odd harmonics covering a wide range of photon energies between 1.3 and 3 eV with minimal reabsorption. The resonantly enhanced conversion efficiency facilitates single-shot measurements that avoid material damage and pave the way to controllable transition between perturbative and non-perturbative regimes of light-matter interactions at the nanoscale.
Keywords
Cite
@article{arxiv.2008.03619,
title = {Generation of even and odd high harmonics in resonant metasurfaces using single and multiple ultra-intense laser pulses},
author = {Maxim R. Shcherbakov and Haizhong Zhang and Michael Tripepi and Giovanni Sartorello and Noah Talisa and Abdallah AlShafey and Zhiyuan Fan and Justin Twardowski and Leonid A. Krivitsky and Arseniy I. Kuznetsov and Enam Chowdhury and Gennady Shvets},
journal= {arXiv preprint arXiv:2008.03619},
year = {2024}
}
Comments
36 pages, 9 figures, 2 tables