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Journal articles
Enhancing thermal radiation with nanoantennas to create infrared sources with high modulation rates
Abstract : In recent decades, researchers have demonstrated incandescent sources that exhibit monochromatic, directional, and even fast modulated infrared emission. Most of the researchers achieve this type of emission by heating the whole device. Here, we propose heating only nanovolumes that can be cooled in a few tens of nanoseconds. This approach could enable high-speed modulation. To compensate for the weak thermal emission of such isolated nanoemitters, we propose inserting the hot nanovolume in the gap of a cold nanoantenna. We calculate the resulting emission enhancement by using a generalized version of Kirchhoff's law, and demonstrate that careful design of the complete antenna– nanoemitter system can result in emission enhancements of more than four orders of magnitude.
https://hal-iogs.archives-ouvertes.fr/hal-01698578
Contributor : Fatima Pereira Connect in order to contact the contributor
Submitted on : Thursday, February 1, 2018 - 2:41:08 PM
Last modification on : Friday, July 2, 2021 - 3:45:28 AM
Contributor : Fatima Pereira Connect in order to contact the contributor
Submitted on : Thursday, February 1, 2018 - 2:41:08 PM
Last modification on : Friday, July 2, 2021 - 3:45:28 AM
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