TY - GEN
T1 - Vectorial Currents and Broadband Terahertz Vector Beams with Optoelectronic Metasurfaces
AU - Pettine, Jacob
AU - Gingras, Lauren
AU - Adel, Peter
AU - Chang, Chun Chieh
AU - Prasankumar, Rohit P.
AU - Holzwarth, Ronald
AU - Taylor, Antoinette J.
AU - Lin, Shi Zeng
AU - Padmanabhan, Prashant
AU - Chen, Hou Tong
PY - 2023
Y1 - 2023
N2 - While fundamental to many scientific and technological applications, capabilities for controlling charge currents remain highly restricted, particularly at modern limiting nanometer spatial and femtosecond temporal scales. Here, we demonstrate a novel method for versatile ultrafast light-based current control within new class of optoelectronic metasurfaces. Local directional charge flows in the graphene layer underlying each gold nanoantenna conspire to millimeter-scale currents, as characterized via terahertz (THz) emission. Implementing largearea vector arrays as efficient sources, we introduce readily frequency- and polarization- tunable broadband cylindrical vector beam generation in the THz range, toward applications in information science, charge acceleration, THz spectroscopies, and THz imaging.
AB - While fundamental to many scientific and technological applications, capabilities for controlling charge currents remain highly restricted, particularly at modern limiting nanometer spatial and femtosecond temporal scales. Here, we demonstrate a novel method for versatile ultrafast light-based current control within new class of optoelectronic metasurfaces. Local directional charge flows in the graphene layer underlying each gold nanoantenna conspire to millimeter-scale currents, as characterized via terahertz (THz) emission. Implementing largearea vector arrays as efficient sources, we introduce readily frequency- and polarization- tunable broadband cylindrical vector beam generation in the THz range, toward applications in information science, charge acceleration, THz spectroscopies, and THz imaging.
UR - https://www.scopus.com/pages/publications/85177667985
U2 - 10.1109/IRMMW-THz57677.2023.10298881
DO - 10.1109/IRMMW-THz57677.2023.10298881
M3 - Conference contribution
T3 - International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz
BT - IRMMW-THz 2023 - 48th Conference on Infrared, Millimeter, and Terahertz Waves
PB - Unknown Publisher
T2 - 48th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2023
Y2 - 1 January 2023
ER -