Journal
OPTICS LETTERS
Volume 44, Issue 17, Pages 4203-4206Publisher
Optica Publishing Group
DOI: 10.1364/OL.44.004203
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Funding
- Defense Advanced Research Projects Agency [HR00111820046]
- U.S. Department of Energy [DE-SC0019140]
- U.S. Department of Energy (DOE) [DE-SC0019140] Funding Source: U.S. Department of Energy (DOE)
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The capability to overcome Kirchhoff's law of thermal radiation provides new opportunities in energy harvesting and thermal radiation control. Previously, design towards demonstrating such capability requires a magnetic field of 3 T, which is difficult to achieve in practice. In this work, we propose a nanophotonic design that can achieve such capability with a far more modest magnetic field of 0.3 Tesla, a level that can be achieved with permanent magnets. Our design uses guided resonance in low-loss dielectric gratings sitting on a magneto-optical material, which provides significant enhancement on the sensitivity to the external magnetic field. (C) 2019 Optical Society of America
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