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. 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.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jul 07, 2021
- Source ID
- 10.1038/s41467-021-24450-9
Entities
People
- Abdallah Alshafey
- Arseniy Kuznetsov
- Enam Chowdhury
- Gennady Shvets
- Giovanni Sartorello
- Haizhong Zhang
- Justin Twardowski
- Leonid A. Krivitsky
- Maxim R Shcherbakov
- Michael Tripepi
- Noah Talisa
- Zhiyuan Fan
Organizations
- Office of Naval Research