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To get a higher sensitivity of surface plasmon microscopy, we report the technique of adopting a radial polarizer to enhance the TM-polarized light as well as an annular disc for modulated detection of plasmon absorption.
Surfac plasmon sensors use transverse magnetic (TM) polarized waves to probe minor refractive index (RI) changes occurring at an interface between a metal film and a dielectric medium. For optical microscopy, SPR phenomena may be taken advantage of to increase the signal- to-noise ratio so as to benefit to the spatial resolution in imaging applications. This paper presents a demonstration performed...
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