Visualizing the bidirectional optical transfer function for near-field enhancement in waveguide coupled plasmonic transducers.

ABSTRACT: We report visualizations of the bidirectional near-field optical transfer function for a waveguide-coupled plasmonic transducer as a metrology technique essential for successful development for mass-fabricated near-field devices. Plasmonic devices have revolutionized the observation of nanoscale phenomena, enabling optical excitation and readout from nanoscale regions of fabricated devices instead of as limited by optical diffraction. Visualizations of the plasmonic transducer modes were acquired both by local near-field excitation of the antenna on the front facet of a waveguide using the focused electron beam of a scanning electron microscope as a probe of the near-field cathodoluminescence during far-field collection from the back facet of the waveguide, and by local mapping of the opti

SUBMITTER: Otto LM 

PROVIDER: S-EPMC5893547 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature