Analysis of deep-subwavelength Au and Ag slit transmittances at terahertz frequencies

Autor(es)

Park, J. -E. ^{[1, 2]} ; Teixeira, F. L. ^[1] ; Borges, B. -H. V. ^[3]

Afiliação do(s) autor(es)

^[1] Ohio State Univ, ElectroSci Lab, 1330 Kinnear Rd, Columbus, OH 43212 - USA

^[2] Hongik Univ, Metamat Elect Device Res Ctr, Seoul 04066 - South Korea

^[3] Univ Sao Paulo, Sch Engn Sao Carlos, Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS; v. 33, n. 7 JUL 1 2016.
• Citações Web of Science: 8

Resumo

We provide a detailed characterization of the transmittance properties of subwavelength slit apertures on Ag and Au plates, as a function of the slit width and plate thickness, for frequencies ranging from 1.2 to 500 THz. As the method of analysis, we choose a mode-matching technique incorporating both discrete and continuum spectra because of its accuracy and suitability to this geometry. The transmittance behavior is shown to be strongly impacted by the variability of the electromagnetic bulk properties of Ag and Au across the terahertz range. The results obtained here constitute a useful compendium of reference data for subwavelength slit transmittances on metal plates at terahertz frequencies. (C) 2016 Optical Society of America (AU)

• Processo FAPESP: 15/50268-5 - Novel metamaterials for rf/microwave and optical applications
• Beneficiário: Ben-Hur Viana Borges
• Modalidade de apoio: Auxílio à Pesquisa - Regular