Generation of even and odd high harmonics in resonant metasurfaces using single and multiple ultra-intense laser pulses

Maxim R. Shcherbakov (), Haizhong Zhang, Michael Tripepi, Giovanni Sartorello, Noah Talisa, Abdallah AlShafey, Zhiyuan Fan, Justin Twardowski, Leonid A. Krivitsky, Arseniy I. Kuznetsov, Enam Chowdhury and Gennady Shvets ()
Additional contact information
Maxim R. Shcherbakov: Cornell University
Haizhong Zhang: A*STAR (Agency for Science, Technology and Research)
Michael Tripepi: The Ohio State University
Giovanni Sartorello: Cornell University
Noah Talisa: The Ohio State University
Abdallah AlShafey: The Ohio State University
Zhiyuan Fan: Cornell University
Justin Twardowski: The Ohio State University
Leonid A. Krivitsky: A*STAR (Agency for Science, Technology and Research)
Arseniy I. Kuznetsov: A*STAR (Agency for Science, Technology and Research)
Enam Chowdhury: The Ohio State University
Gennady Shvets: Cornell University

Nature Communications, 2021, vol. 12, issue 1, 1-6

Abstract: 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. Here, we demonstrate a nanoscale platform for highly efficient HHG driven by intense 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 study the controllable transition between perturbative and non-perturbative regimes of light-matter interactions at the nanoscale.

Date: 2021
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DOI: 10.1038/s41467-021-24450-9

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