Strong absorption and selective emission from engineered metals with dielectric coatings

W. Streyer, S. Law, G. Rooney, T. Jacobs, D. Wasserman

Research output: Contribution to journalArticlepeer-review

94 Scopus citations

Abstract

We demonstrate strong-to-perfect absorption across a wide range of mid-infrared wavelengths (5-12μm) using a two-layer system consisting of heavily-doped silicon and a thin high-index germanium dielectric layer. We demonstrate spectral control of the absorption resonance by varying the thickness of the dielectric layer. The absorption resonance is shown to be largely polarization-independent and angle-invariant. Upon heating, we observe selective thermal emission from our materials. Experimental data is compared to an analytical model of our structures with strong agreement.

Original languageEnglish (US)
Pages (from-to)9113-9122
Number of pages10
JournalOptics Express
Volume21
Issue number7
DOIs
StatePublished - Apr 8 2013

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

Fingerprint

Dive into the research topics of 'Strong absorption and selective emission from engineered metals with dielectric coatings'. Together they form a unique fingerprint.

Cite this