Selective absorbers and thermal emitters for far-infrared wavelengths

W. Streyer, K. Feng, Y. Zhong, A. J. Hoffman, D. Wasserman

Research output: Contribution to journalArticlepeer-review


We demonstrate engineered selective absorption and subsequent selective thermal emission from sub-wavelength thickness optical structures at far-infrared (30-40 μm) wavelengths. Control over absorption/emission wavelength is demonstrated, with both polarization-dependent and -independent structures fabricated. Samples are characterized experimentally by Fourier transform infrared reflection and emission spectroscopy, and modeled using three-dimensional rigorous coupled wave analysis. The ability to design and demonstrate strong selective absorption and thermal emission from optical structures in the far-infrared offers a potential route towards low-cost sources for the exploration of Reststrahlen band frequencies.

Original languageEnglish (US)
Article number081105
JournalApplied Physics Letters
Issue number8
StatePublished - Aug 24 2015

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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