Angular-dependent photodetection enhancement by a metallic circular disk optical antenna
Source abstract
Abstract
In this paper, we analyze the plasmonic resonance excited by linearly polarized longwave infrared (LWIR) plane waves in a metallic circular disk optical antenna (MCDA). The surface current distributions are simulated at different wavelengths, incident angles, and polarizations. The excited surface plasmonic resonance waves (SPRs) are different from the Bessel-type of SPR modes and closely resemble those in a monopole antenna. An MCDA coupled LWIR quantum dot infrared photodetector (QDIP) was fabricated and measured at different LWIR plane wave wavelengths and incident angles. A linear correlation between the enhancement ratio and the integrated square of the current is obtained, indicating the monopole antenna effect is a dominating factor for the plasmonic enhancement.
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Research context
OpenAlex topics: Plasmonic and Surface Plasmon Research · Gold and Silver Nanoparticles Synthesis and Applications · Metamaterials and Metasurfaces Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
University of Massachusetts Lowell 1 Department of Electrical and Computer Engineering, , One University Avenue, Lowell, Massachusetts 01854, USA
Stonehill College 2 Department of Physics, , 320 Washington Street, Easton, Massachusetts 02357, USA
Northrop Grumman 3 NG Next, , 1 Space Park, Redondo Beach, California 90278, USA
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