Real-time phase-shift detection of the surface plasmon resonance

TL;DR

This paper presents a real-time phase measurement technique for laser beams reflected from metallic films, enhancing data acquisition speed and potentially improving the sensitivity of surface plasmon resonance sensors.

Contribution

It introduces a method for direct, real-time phase detection of surface plasmon polaritons, which is novel and improves upon existing measurement techniques.

Findings

Enables real-time phase measurement of reflected laser beams.

Potentially increases the sensitivity of surface plasmon resonance sensors.

Allows faster data acquisition in plasmonic sensing applications.

Abstract

We investigate 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.