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arXiv · 1605.01247

True thermal antenna with hyperbolic metamaterials

Grégory Barbillon·Jean-Paul Hugonin·Svend-Age Biehs·Philippe Ben-Abdallah
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Abstract

A thermal antenna is an electromagnetic source which emits in its surrounding, a spatially coherent field in the infrared frequency range. Usually, its emission pattern changes with the wavelength so that the heat flux it radiates is weakly directive. Here, we show that a class of hyperbolic materials, possesses a Brewster angle which is weakly dependent on the wavelength, so that they can radiate like a true thermal antenna with a highly directional heat flux. The realization of these sources could open a new avenue in the field of thermal management in far-field regime.

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Grégory Barbillon, Jean-Paul Hugonin, Svend-Age Biehs, Philippe Ben-Abdallah. 2016-05-04. True thermal antenna with hyperbolic metamaterials. https://doi.org/10.1364/oe.25.023356

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