MODIFIED OTTO SCHEME FOR EXITATION OF SURFACE PLASMONS
Abstract
А new type of resonant excitation of surface plasmons is proposed and investigated which is characterized by the equality of the phase velocities and attenuation coefficients of the plasmons and an excitation field. It has been shown that this type of resonance can be realized by means of the modified Otto scheme. The peculiarity of this scheme is the presence in a transition layer of the periodic system of wedges allowing one to form an inclined evanescent wave. The calculation shows that the modified scheme can provide a local power gain of two orders greater as compared with the standard Otto scheme.
About the Author
N. A. KHILO
B. I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus
Belarus
Belarus
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