Plasmonics
This chapter introduces the principles of the surface plasmon resonance (SPR) phenomenon and its applications, particularly in sensing. The SPR is a quantum electromagnetic (EM) phenomenon arising from the interaction of light with free electrons at a metal-dielectric interface emerging as a longitudinal EM wave in a two-dimensional gas of charged particles such as free electrons in metals. Under certain conditions, the energy carried by the photons is transferred to collective excitations of free electrons, called surface plasmons (SPs), at that interface. This transfer of energy occurs only at a specific resonance wavelength of light when the momentum of the photon matches that of the plasmon. The SPs excited are strongly ...
Get Integrated Nanophotonic Devices, 2nd Edition now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
