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dc.contributor.authorLin, Shawn-Yuen_US
dc.contributor.authorHsieh, Mei-Lien_US
dc.contributor.authorJohn, Sajeeven_US
dc.contributor.authorFrey, B.en_US
dc.contributor.authorBur, James A.en_US
dc.contributor.authorLuk, Ting-Shanen_US
dc.contributor.authorWang, Xuanjieen_US
dc.contributor.authorNarayanan, Shankaren_US
dc.date.accessioned2020-10-05T02:02:03Z-
dc.date.available2020-10-05T02:02:03Z-
dc.date.issued2020-03-23en_US
dc.identifier.issn2045-2322en_US
dc.identifier.urihttp://dx.doi.org/10.1038/s41598-020-62063-2en_US
dc.identifier.urihttp://hdl.handle.net/11536/155467-
dc.description.abstractPlanck's law predicts the distribution of radiation energy, color and intensity, emitted from a hot object at thermal equilibrium. The Law also sets the upper limit of radiation intensity, the blackbody limit. Recent experiments reveal that micro-structured tungsten can exhibit significant deviation from the blackbody spectrum. However, whether thermal radiation with weak non-equilibrium pumping can exceed the blackbody limit in the far field remains un-answered experimentally. Here, we compare thermal radiation from a micro-cavity/tungsten photonic crystal (W-PC) and a blackbody, which are both measured from the same sample and also in-situ. We show that thermal radiation can exceed the blackbody limit by >8 times at lambda = 1.7 mu m resonant wavelength in the far-field. Our observation is consistent with a recent calculation by Wang and John performed for a 2D W-PC filament. This finding is attributed to non-equilibrium excitation of localized surface plasmon resonances coupled to nonlinear oscillators and the propagation of the electromagnetic waves through non-linear Bloch waves of the W-PC structure. This discovery could help create super-intense narrow band thermal light sources and even an infrared emitter with a laser-like input-output characteristic.en_US
dc.language.isoen_USen_US
dc.titleAn In-situ and Direct Confirmation of Super-Planckian Thermal Radiation Emitted From a Metallic Photonic-Crystal at Optical Wavelengthsen_US
dc.typeArticleen_US
dc.identifier.doi10.1038/s41598-020-62063-2en_US
dc.identifier.journalSCIENTIFIC REPORTSen_US
dc.citation.volume10en_US
dc.citation.issue1en_US
dc.citation.spage0en_US
dc.citation.epage0en_US
dc.contributor.department光電工程學系zh_TW
dc.contributor.departmentDepartment of Photonicsen_US
dc.identifier.wosnumberWOS:000563390400022en_US
dc.citation.woscount0en_US
Appears in Collections:Articles