Formalism for Multiphoton Plasmon Excitation in Jellium Clusters

Details Formalism for Multiphoton Plasmon Excitation in Jellium Clusters Formalism for Multiphoton Plasmon Excitation in Jellium Clusters

2002-02-27

arxiv.org/abs/physics/0202066v1

Physics

Atomic and Molecular Clusters

29 pages, 1 figure

Scientific paper

10.1103/PhysRevA.66.013207

We present a new formalism for the description of multiphoton plasmon excitation processes in jellium clusters. By using our method, we demonstrate that, in addition to dipole plasmon excitations, the multipole plasmons (quadrupole, octupole, etc) can be excited in a cluster by multiphoton absorption processes, which results in a significant difference between plasmon resonance profiles in the cross sections for multiphoton as compared to single-photon absorption. We calculate the cross sections for multiphoton absorption and analyse the balance between the surface and volume plasmon contributions to multipole plasmons.

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