Wide-field high-resolution surface-plasmon interference microscopy
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Updated: Jun 19, 2026

Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons
Published on: July 21, 2018
Michael G Somekh1, Graham Stabler, Shugang Liu
1Institute of Biophysics Imaging and Optical Science, University of Nottingham, University Park, Nottingham NG7 2RD, United Kingdom. mike.somekh@nottingham.ac.uk
Abstract:
We describe a wide-field interferometric surface-plasmon microscope capable of submicrometer resolution. The system is a speckle-illuminated Linnik interferometer, which behaves as a wide-field analog of a scanning heterodyne interferometer. The presented images demonstrate contrast reversals at different defocus while retaining submicrometer lateral resolution. The contrast mechanisms are discussed as well as the instrumental requirements of the technique.
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