129. MODELS FOR IMPEDANCE MATCHED PLASMONIC GRATINGS

Department: Mechanical & Aerospace Engineering
Research Institute Affiliation: Graduate Program in Materials Science and Engineering
Faculty Advisor(s): Prabhakar R. Bandaru

Primary Student
Name: Anna Alexander
Email: a7alexan@ucsd.edu
Phone: 404-451-3048
Grad Year: 2016

Abstract
Metal plasmonic gratings and nanoantennas are often modeled as Fabry Perot resonances. R approaches 0 when the grating or nanoantenna is impedance matched to free space. Most analysis focuses on the distance between resonant peaks while neglecting to predict or describe the position of the first peak, which can be considered a phase offset. In addition to changing the exact experimental parameters to get a specific R, the phase offset changes the relative location of field maxima and minima, which is important if an application requires optimizing both R and field intensity. We investigate the meaning of the phase offset as it relates to the interaction between the excited and unexcited portions of the grating.

Industry Application Area(s)
Electronics/Photonics | Materials

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