Light-Driven Nanoscale Vectorial Currents
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2023
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| author | Pettine, Jacob Padmanabhan, Prashant Shi, Teng Gingras, Lauren McClintock, Luke Chang, Chun-Chieh Kwock, Kevin W. C. Yuan, Long Huang, Yue Nogan, John Baldwin, Jon K. Adel, Peter Holzwarth, Ronald Azad, Abul K. Ronning, Filip Taylor, Antoinette J. Prasankumar, Rohit P. Lin, Shi-Zeng Chen, Hou-Tong |
| author_facet | Pettine, Jacob Padmanabhan, Prashant Shi, Teng Gingras, Lauren McClintock, Luke Chang, Chun-Chieh Kwock, Kevin W. C. Yuan, Long Huang, Yue Nogan, John Baldwin, Jon K. Adel, Peter Holzwarth, Ronald Azad, Abul K. Ronning, Filip Taylor, Antoinette J. Prasankumar, Rohit P. Lin, Shi-Zeng Chen, Hou-Tong |
| contents | Controlled charge flows are fundamental to many areas of science and technology, serving as carriers of energy and information, as probes of material properties and dynamics, and as a means of revealing or even inducing broken symmetries. Emerging methods for light-based current control offer promising routes beyond the speed and adaptability limitations of conventional voltage-driven systems. However, optical generation and manipulation of currents at nanometer spatial scales remains a basic challenge and a crucial step towards scalable optoelectronic systems for microelectronics and information science. Here, we introduce vectorial optoelectronic metasurfaces in which ultrafast light pulses induce local directional charge flows around symmetry-broken plasmonic nanostructures, with tunable responses and arbitrary patterning down to sub-diffractive nanometer scales. Local symmetries and vectorial current distributions are revealed by polarization- and wavelength-sensitive electrical readout and terahertz (THz) emission, while spatially-tailored global currents are demonstrated in the direct generation of elusive broadband THz vector beams. We show that in graphene, a detailed interplay between electrodynamic, thermodynamic, and hydrodynamic degrees of freedom gives rise to rapidly-evolving nanoscale driving forces and charge flows under extreme temporal and spatial confinement. These results set the stage for versatile patterning and optical control over nanoscale currents in materials diagnostics, THz spectroscopies, nano-magnetism, and ultrafast information processing. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2307_11928 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Light-Driven Nanoscale Vectorial Currents Pettine, Jacob Padmanabhan, Prashant Shi, Teng Gingras, Lauren McClintock, Luke Chang, Chun-Chieh Kwock, Kevin W. C. Yuan, Long Huang, Yue Nogan, John Baldwin, Jon K. Adel, Peter Holzwarth, Ronald Azad, Abul K. Ronning, Filip Taylor, Antoinette J. Prasankumar, Rohit P. Lin, Shi-Zeng Chen, Hou-Tong Mesoscale and Nanoscale Physics Optics Controlled charge flows are fundamental to many areas of science and technology, serving as carriers of energy and information, as probes of material properties and dynamics, and as a means of revealing or even inducing broken symmetries. Emerging methods for light-based current control offer promising routes beyond the speed and adaptability limitations of conventional voltage-driven systems. However, optical generation and manipulation of currents at nanometer spatial scales remains a basic challenge and a crucial step towards scalable optoelectronic systems for microelectronics and information science. Here, we introduce vectorial optoelectronic metasurfaces in which ultrafast light pulses induce local directional charge flows around symmetry-broken plasmonic nanostructures, with tunable responses and arbitrary patterning down to sub-diffractive nanometer scales. Local symmetries and vectorial current distributions are revealed by polarization- and wavelength-sensitive electrical readout and terahertz (THz) emission, while spatially-tailored global currents are demonstrated in the direct generation of elusive broadband THz vector beams. We show that in graphene, a detailed interplay between electrodynamic, thermodynamic, and hydrodynamic degrees of freedom gives rise to rapidly-evolving nanoscale driving forces and charge flows under extreme temporal and spatial confinement. These results set the stage for versatile patterning and optical control over nanoscale currents in materials diagnostics, THz spectroscopies, nano-magnetism, and ultrafast information processing. |
| title | Light-Driven Nanoscale Vectorial Currents |
| topic | Mesoscale and Nanoscale Physics Optics |
| url | https://arxiv.org/abs/2307.11928 |