Direct observation of quasi-coherent thermal emission by a three-dimensional metallic photonic crystal

Mei-Li Hsieh, Bur James A. , Yong Sung Kim, Shawn Yu Lin

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

We report a direct observation of a quasi-coherent thermal emission from a heated three-dimensional photonic-crystal sample. While the sample was under Joule heating, we observed multiple oscillations in its emission interferogram and deduced a coherent length of L-coh congruent to 20-40 mu m, 5-10 times longer than that of a blackbody at comparable wavelengths. The observed, relatively long coherent length is attributed to coupling of thermal emission into lossy Bloch modes that oscillate coherently over a distance determined by decay length and the slow light nature of Bloch modes at the band-edges. (C) 2013 Optical Society of America
Original languageEnglish
Pages (from-to)911-913
Number of pages3
JournalOptics Letters
Volume38
Issue number6
DOIs
StatePublished - 15 May 2013

Keywords

  • LIGHT

Fingerprint Dive into the research topics of 'Direct observation of quasi-coherent thermal emission by a three-dimensional metallic photonic crystal'. Together they form a unique fingerprint.

Cite this