Principles and Applications of Surface Plasmon Polaritons
The interaction between light and matter has always been of interest to researchers and is regarded as the most fundamental physical problem related to various optical applications.In this regard,a new type of meta-excited quasiparticles,surface plasmon polaritons(SPPs),which are formed by the interaction between light and condensed matter,have begun to emerge as a new type of quasiparticles due to their unique dispersion and local-field enhancement properties.SPPs devices break the traditional optical diffraction limitations and show their unique and significant advantages in nanophotonic devices,which are widely used in the frontiers of micro-and nanophotonics research.The paper briefly describes the dispersion relation,excitation mode,propagation form and physical properties of SPPs,focuses on the applications of SPPs in waveguides,near-field optics,sensors,biomedicine,photonic chips,surface-enhanced Raman scattering and solar energy,and looks forward to the potential applications and research prospects of SPPs.
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