| 释义 |
polariton Physics.|pəʊˈlærɪtɒn|
[f. polarization and related words + -iton, prob. after exciton.]
A quasiparticle in an ionic crystal consisting of a photon strongly coupled to a quasiparticle such as a phonon or exciton.
1958J. J. Hopfield in Physical Rev. CXII. 1558/2 The polarization field ‘particles’ analogous to photons will be called ‘polaritons’. (Excitons will be shown to be one kind of polariton... Optical phonons are another example of polaritons.) 1963R. S. Knox Theory of Excitons iii. 133 An external photon excites a crystal to a state described by a polariton packet... If this new particle of excitation fails to interact with any energy sinks, it re⁓excites an external photon on the other side of the crystal. However, by virtue of its exciton component, it can decay into states which do not couple as easily to external photons (i.e., ‘nonradiative’ states). 1971J. I. Pankove Optical Processes in Semiconductors i. 16 A polariton is the complex resulting from the polarizing interaction between an electromagnetic wave and an oscillator resonant at the same frequency... Although polaritons initially have designated the interaction between excitons and photons, they can also represent the interaction between photons and optical phonons and between photons and plasmons. Ibid. 17 The polariton is not to be confused with the polaron of ionic crystals, which results from an interaction between the electron and the lattice. 1972Physics Bull. Aug. 490/1 Two chapters..cover..light scattering by polaritons. |