Coherent thermal source formed by periodic microcavities

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

doi:10.1117/12.768216

6 February 2008 Coherent thermal source formed by periodic microcavities

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

Proceedings Volume 6883, Advanced Fabrication Technologies for Micro/Nano Optics and Photonics; 68830Y (2008) https://doi.org/10.1117/12.768216
Event: MOEMS-MEMS 2008 Micro and Nanofabrication, 2008, San Jose, California, United States

Abstract

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.

Citation Download Citation

Nir Dahan, Avi Niv, Gabriel Biener, Yuri Gorodetski, Vladimir Kleiner, and Erez Hasman "Coherent thermal source formed by periodic microcavities", Proc. SPIE 6883, Advanced Fabrication Technologies for Micro/Nano Optics and Photonics, 68830Y (6 February 2008); https://doi.org/10.1117/12.768216

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