Journal
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
Volume 29, Issue 9, Pages 2260-2269Publisher
OPTICAL SOC AMER
DOI: 10.1364/JOSAB.29.002260
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- Charles Godfrey Binder Endowment at the Pennsylvania State University
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We formulated a boundary-value problem for the excitation of Tamm waves guided by the periodically corrugated interface of a homogeneous material and a rugate filter. Both partnering materials are isotropic and dielectric. After solving the problem using the rigorous coupled-wave approach, the total transmittance, total reflectance, and absorptance were calculated as functions of the angle of incidence of a plane wave that could be either p or s polarized. The excitation of a Tamm wave was inferred for every absorptance peak that is independent of the thicknesses of both partnering materials. Therefore, multiple Tamm waves can be simultaneously excited using a converging or diverging incident beam instead of an incident plane wave. Even though the absorptance peaks are very low when a Tamm wave is excited, the corresponding spikes in the total-reflectance curves are much larger and guarantee experimental detection, as well as application to optical sensing. (c) 2012 Optical Society of America
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