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. 2019 Jan 10;10:109. doi: 10.1038/s41467-018-08047-3

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© The Author(s) 2019

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 4 — PPC cavity temperature and time-dependent thermal emission. a The reflection spectra of the PPC cavity at applied V_DS voltages 2 and 4 V on the graphene emitter. The cavity resonance shows constant red-shifting as V_DS increases. b The wavelength shift (red) and the extracted temperature (blue) of the PPC cavity with respect to V_DS. c Generation of a short (350 ps) thermal radiation pulses from the cavity-graphene emitter by applying an 100-ps electrical pulse. Inset: temporal profile of the electrical pulse