Coherent thermal source formed by periodic microcavities

Nir Dahan, Avi Niv, Gabriel Biener, Yuri Gorodetski, Vladimir Kleiner, Erez Hasman

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


An extraordinary coherent thermal emission from an anisotropic microstructure is experimentally and theoretically presented. The enhanced coherency is due to coherent coupling between resonant cavities obtained by surface standing waves, where each cavity supports a localized field that is attributed to coupled surface phonon-polaritons. We show that it is possible to obtain a polarized quasi-monochromatic thermal source from a SiC microstructure with a high quality factor Q ∼ 600 at the resonant frequency of the cavity, and a spatial coherence length 760λ which corresponds to angular divergence of 1.3mrad.

Original languageEnglish
Title of host publicationAdvanced Fabrication Technologies for Micro/Nano Optics and Photonics
StatePublished - 31 Mar 2008
Externally publishedYes
EventAdvanced Fabrication Technologies for Micro/Nano Optics and Photonics - San Jose, CA, United States
Duration: 21 Jan 200823 Jan 2008

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


ConferenceAdvanced Fabrication Technologies for Micro/Nano Optics and Photonics
Country/TerritoryUnited States
CitySan Jose, CA


  • Resonators
  • Surface waves
  • Thermal emission

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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