Surface Plasmon Interference Fringes in Back-Reflection
A. Drezet, A. L. Stepanov, A. Hohenau, B. Steinberger, N. Galler, H., Ditlbacher, A. Leitner, F. R. Aussenegg, M. U. Gonzalez, J.-C. Weeber, J., R. Krenn
TL;DR
This paper demonstrates the experimental observation of high-visibility surface plasmon interference fringes using leakage radiation microscopy, providing a new approach for analyzing SPP patterns and mirror reflectivity.
Contribution
It introduces a novel experimental method for observing and analyzing SPP interference fringes with high visibility and provides quantitative insights into Bragg mirror reflectivity.
Findings
High-visibility SPP interference fringes observed
Half-wavelength periodicity in fringes confirmed
Quantitative analysis of Bragg mirror reflectivity
Abstract
We report the experimental observation of surface plasmon polariton (SPP) interference fringes with near-unity visibility and half-wavelength periodicity obtained in back reflection on a Bragg mirror. The presented method based on leakage radiation microscopy (LRM) represents an alternative solution to optical near-field analysis and opens new ways for the quantitative analysis of SPP fringes. With LRM we investigate various SPP interference patterns and analyze the high reflectivity of Bragg mirror in comparison with theoretical models.
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Taxonomy
TopicsPhotonic and Optical Devices · Near-Field Optical Microscopy · Optical Coatings and Gratings