Reconfigurable electronic circuits for magnetic fields controlled by structured light

K. Jana, K. R. Herperger, F. Kong, Y. Mi, C. Zhang, P. B. Corkum, S. Sederberg*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

33 Citations (Scopus)

Abstract

Dynamic control over the conduction band electrons of a semiconductor is a central technological pursuit. Beyond electronic circuitry, flexible control over the spatial and temporal character of semiconductor currents enables precise spatiotemporal structuring of magnetic fields. Despite their importance in science and technology, the control of magnetic fields at the micrometre spatial scale and femtosecond temporal scale using conventional electromagnets remains challenging. Here, we apply structured light beams to interfering photoexcitation pathways in gallium arsenide to sculpt the spatial and momentum configuration of its conduction band population. Programmable control over several hundred micrometre-scale current elements is achieved by manipulating the wavefronts of an optical beam using a spatial light modulator, enabling vast flexibility in the excited current patterns. Using this platform, we demonstrate dynamic optoelectronic interconnects, circuits for spatially tailored magnetic fields and magnetic field lattices.

Original languageEnglish
Pages (from-to)622-626
Number of pages5
JournalNature Photonics
Volume15
Issue number8
DOIs
Publication statusPublished - Aug 2021
Externally publishedYes

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