Quantum mechanics

Magnetic field

Pure mathematics

Radiation

Field (mathematics)

Nanophotonics

Physics

Dielectric

Mathematics

Optics

Political science

Thermal

Meteorology

Optoelectronics

Magnet

Optics Letters

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.

Near-complete violation of Kirchhoff’s law of thermal radiation with a 03 T magnetic field