Surface plasmon propagation in an elliptical corral A. Drezet, A. L. Stepanov, H. Ditlbacher, A. Hohenau, B. Steinberger, F. R. Aussenegg, A. Leitner, and J. R. Krenn Institut of Physics, Karl-Franzens University Graz, Universittsplatz 5 A-8010 Graz, Austria (Dated: October 29, 2018) We report the experimental realization of an elliptical Bragg reflector acting as an interferometer for propagating surface plasmon sSPd waves. We investigate SP interferometry in this device using a leakage radiation microscope and we compare our observations with a theoretical model for SP propagation. Strong SP focalization as a function of laser polarization orientation is observed and justified. Abstract arXiv:1002.1588v1 [physics.optics] 8 Feb 2010 1