Phase effects in guided mode resonances II: measuring the angular phase of a surface plasmon polariton |
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| Authors: | M.J. Theisen T.G. Brown |
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| Affiliation: | 1. The Institute of Optics, University of Rochester, River Campus, Rochester, NY, USA.michael.theisen@rochester.edu;3. The Institute of Optics, University of Rochester, River Campus, Rochester, NY, USA. |
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| Abstract: | We show how the phase of a resonant interaction between a focused beam and a guided mode can be directly observed in a pupil imaging experiment, in which the irradiance leaving the pupil of a standard microscope is relayed to an image sensor through a combination Wollaston prism, calcite beam splitter and polarizer. We apply the method to the observation of a surface plasmon polariton resonance excited in a corrugated silver film fabricated using electron beam lithography. We discuss how this particular imaging configuration could be adapted for applications in plasmonic optical sensing. |
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| Keywords: | optical waveguide waveguide mode resonance surface plasmon polariton optical phase |
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