Near orthogonal launch of SPR modes in Au films
classification
⚛️ physics.optics
keywords
filmorthogonalplasmonableacrossaxisborosilicateclose
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We report the excitation of a surface plasmon resonance (SPR) close to the orthogonal axis of a gold (Au) film on borosilicate glass. Direct spectroscopic measurement of SPR shifts using different liquids are made at ~5{\deg} incidence within a reflection spectrophotometer. Scattering of light that is able to penetrate across the film at the interfaces is the proposed mechanism by which coupling, and plasmon localization, is established.
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