TITLE

New excitation method of surface polaritons

AUTHOR(S)
Nakagawa, Yasuhiko; Kaneko, Michihiro; Terunuma, Noboru
PUB. DATE
November 1988
SOURCE
Applied Physics Letters;11/28/1988, Vol. 53 Issue 22, p2141
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We propose a new excitation method for surface polaritons of an evanescent mode which cannot be excited by the attenuated total reflection method. We designed and produced a thin-film waveguide to excite surface polaritons of evanescent modes at a Ag-SiO2 interface. If the wave number of the optical guided waves propagating in the dielectric thin-film waveguide (SiO2/Ta2O5/SiO2) is equal to the wave number of the surface polaritons, then a coupling between the two modes occurs. We can confirm the excitation of the surface polaritons by an attenuation of the optical guided waves.
ACCESSION #
9829010

 

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