Resonance spectra of diabolo optical antenna arrays
Source abstract
Abstract
A complete set of diabolo optical antenna arrays with different waist widths and periods was fabricated on a sapphire substrate by using a standard e-beam lithography and lift-off process. Fabricated diabolo optical antenna arrays were characterized by measuring the transmittance and reflectance with a microscope-coupled FTIR spectrometer. It was found experimentally that reducing the waist width significantly shifts the resonance to longer wavelength and narrowing the waist of the antennas is more effective than increasing the period of the array for tuning the resonance wavelength. Also it is found that the magnetic field enhancement near the antenna waist is correlated to the shift of the resonance wavelength.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Plasmonic and Surface Plasmon Research · Near-Field Optical Microscopy · Advanced Fiber Optic Sensors
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
University of Alabama in Huntsville 1 Department of Electrical and Computer Engineering, , 301 Sparkman Drive, Huntsville, AL 35899, USA
Naval Research Laboratory 2 , 4555 Overlook Ave., SW Washington, DC 20375, USA
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