Optical magnetic mirrors without metals

By Sheng Liu, M. Sinclair, T. Mahony, Y. Jun, S. Campione, J. Ginn, D. Bender, J. Wendt, J. Ihlefeld, P. Clem and 2 more. 2014

187 citations recorded by the source corpus.

The reflection of an optical wave from metal, arising from strong interactions between the optical electric field and the free carriers of the metal, is accompanied by a phase reversal of the reflected electric field. A far less common route to achieving high reflectivity exploits strong interactions between the material and the optical magnetic field to produce a “magnetic mirror” that does not reverse the phase of the reflected electric field. At optical frequencies, the magnetic properties required for strong interaction can be achieved only by using artificially tailored materials. Here, we experimentally demonstrate, for the first time to the best of our knowledge, the magnetic mirror behavior of a low-loss all-dielectric metasurface at infrared optical frequencies through direct measurements of the phase and amplitude of the reflected optical wave. The enhanced absorption and emission of transverse-electric dipoles placed close to magnetic mirrors can lead to exciting new advances in sensors, photodetectors, and light sources.

Subfields: Aerospace Engineering, Biomedical Engineering, Electronic, Optical and Magnetic Materials

View Paper: https://www.semanticscholar.org/paper/ab4a48de1ba63034718da072cae5537764a2fdab

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In Aerospace Engineering

In Biomedical Engineering

In Electronic, Optical and Magnetic Materials

Citations in the corpus

Optically resonant dielectric nanostructures (2016, background): “One such effect is magnetic mirror–like behavior, when the dielectric metasurface acts as a perfect magnetic conductor flipping the phase of an incident magnetic field with no effect on the phase of the electric field (89).”
Recent advances in planar optics: from plasmonic to dielectric metasurfaces (2017, background): “Strong magnetic activities have also been reported in cubic resonator metamaterial in the mid-IR for application as optical magnetic mirrors [81,82].”
A review of metasurfaces: physics and applications (2016, background): “feasible for dielectric metasurfaces to operate in a re ection conguration [21, 93]. This enabled the demonstration of broadband dielectric metasurface mirrors [138{140] and optical magnetic mirrors [141, 142], without re ection phase reversal in the latter. Using geometric shapes other than spheric”