Cornell researchers have developed nanostructures that enable record-breaking conversion of laser pulses into high-harmonic generation, paving the way for new scientific tools for high-resolution imaging and studying physical processes that occur at the scale of an attosecond – one quintillionth of a second. ... The research is detailed in the paper “Generation of Even and Odd High Harmonics in Resonant Metasurfaces Using Single and Multiple Ultra-Intense Laser Pulses,” published on July 7, 2021, in Nature Communications. Maxim Shcherbakov, who conducted the research as a Cornell postdoctoral associate before becoming an assistant professor [of electric engineering and computer science] at the University of California, Irvine, is the lead author. Read More