Real-time phase-shift detection of the surface plasmon resonance |
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Authors: | T. König M. Weidemüller A. Hemmerich |
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Affiliation: | 1. Institut für Laser-Physik, Universit?t Hamburg, Luruper Chaussee 149, 22761, Hamburg, Germany 2. Physikalisches Institut, Universit?t Freiburg, Hermann-Herder-Stra?e 3, 79104, Freiburg, Germany
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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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