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Surface Plasmon Polaritons (SPPs) Introduction and basic ...
Plasmon polariton: coupled state between a plasmon and a photon. Phonon polariton: coupled state between a phonon and a photon. PlasmonsPlasmons A plasmon is the quantum of the collective excitation of freeelectrons in solids. Electron plasma effects are most pronounced in free-electron-like metals.
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Surface plasmons
www.photonics.ethz.chmetal’s free electron gas can sustain surface and volume charge density oscillations, called plasmon polaritons or plasmons with distinct resonance frequencies. The ex-istence of plasmons is characteristic for the interaction of metal nanostructures with light. Similar behavior cannot be simply reproduced in other spectral ranges us-
Chapter 7 Angular Spectrum Representation
www.photonics.ethz.chspread out only slowly in the transverse direction. Examples are laser beam prop-agation or optical waveguide applications. In these examples the wavevectors k = (kx,ky,kz) in the angular spectrum representation are almost parallel to the z-axis and the transverse wavenumbers (kx,ky) are small compared to k. We can then expand the square root ...
Lecture Notes on ELECTROMAGNETIC FIELDS AND WAVES
www.photonics.ethz.chThe objective of this course is to establish the theoretical foundations that lead to Eq. (2) and to develop an understanding for the generation and propagation of electromagnetic fields. Microscopic and Macroscopic Electromagnetism In microscopic electromagnetism one deals with discrete point charges q i located at r n (see Figure 4). The ...
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