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Our ability to structure magnetic fields in space and time is limited by the electrical conductors and superconductors used to carry currents in electromagnets. In this work, we explore the possibility to transfer spatial and temporal structure from femtosecond laser pulses to currents in solids and gases via coherent control. In particular, we demonstrate how structured light can be used to sculpt and reconfigure complex current arrangements including ring currents in solids and gases. I will discuss our experimental efforts to use these currents for reconfigurable optoelectronic circuitry, to control THz bandwidth magnetic fields, and to serve as active metasurfaces for generating THz impulses with exotic spatio-temporal structure.
Shawn Sederberg
"Transferring structure from light to currents for terahertz magnetic impulses", Proc. SPIE PC11999, Ultrafast Phenomena and Nanophotonics XXVI, PC1199908 (7 March 2022); https://doi.org/10.1117/12.2604014
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Shawn Sederberg, "Transferring structure from light to currents for terahertz magnetic impulses," Proc. SPIE PC11999, Ultrafast Phenomena and Nanophotonics XXVI, PC1199908 (7 March 2022); https://doi.org/10.1117/12.2604014