Abstract
We have investigated a method to directly measure the phase of a laser beam reflected from a metallic film after excitation of surface plasmon polaritons. This method permits real-time access to the phase information, it increases the possible speed of data acquisition, and it may thus prove useful for increasing the sensitivity of surface plasmon based sensors.
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König, T., Weidemüller, M. & Hemmerich, A. Real-time phase-shift detection of the surface plasmon resonance. Appl. Phys. B 93, 545–549 (2008). https://doi.org/10.1007/s00340-008-3188-y
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DOI: https://doi.org/10.1007/s00340-008-3188-y