Observation of magneto-electric rectification at non-relativistic intensities

M. Tuan Trinh (), Gregory Smail, Krishnandu Makhal, Da Seul Yang, Jinsang Kim and Stephen C. Rand
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M. Tuan Trinh: University of Michigan
Gregory Smail: University of Michigan
Krishnandu Makhal: University of Michigan
Da Seul Yang: University of Michigan
Jinsang Kim: University of Michigan
Stephen C. Rand: University of Michigan

Nature Communications, 2020, vol. 11, issue 1, 1-6

Abstract: Abstract The subject of electromagnetism has often been called electrodynamics to emphasize the dominance of the electric field in dynamic light–matter interactions that take place under non-relativistic conditions. Here we show experimentally that the often neglected optical magnetic field can nevertheless play an important role in a class of optical nonlinearities driven by both the electric and magnetic components of light at modest (non-relativistic) intensities. We specifically report the observation of magneto-electric rectification, a previously unexplored nonlinearity at the molecular level which has important potential for energy conversion, ultrafast switching, nano-photonics, and nonlinear optics. Our experiments were carried out in nanocrystalline pentacene thin films possessing spatial inversion symmetry that prohibited second-order, all-electric nonlinearities but allowed magneto-electric rectification.

Date: 2020
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DOI: 10.1038/s41467-020-19125-w

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