Experimental observation of anomalous thermal radiation from a three-dimensional metallic photonic crystal

Mei-Li Hsieh, Shawn Yu Lin, Bur James A. , Shenoi Rajeev

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Abstract

We report some striking results on thermal radiation properties of a resonantly coupled cavity photonic crystal (PhC) at elevated temperatures (T = 400-900 K). We experimentally found that at resonant wavelengths, lambda = 1.1, 1.64, 2.85 mu m, the PhC emission is spectrally selective, quasi-coherent, directional, and shows significant deviation from Planck's blackbody law at equilibrium. The presence of non-equilibrium effects, driven by strong thermal excitation and cavity resonance, may be the major cause for our experimental observation.
Original languageEnglish
Article number234002
JournalNanotechnology
Volume26
Issue number23
DOIs
StatePublished - 15 Jun 2015

Keywords

  • photonic bandgap materials; plasma interactions; thermal radiation; photonic crystal lasers and coherent effects

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