Phys. Rev. Lett. 90, 027402 (2003) [4 pages]Surface Plasmon Amplification by Stimulated Emission of Radiation: Quantum Generation of Coherent Surface Plasmons in NanosystemsReceived 15 September 2002; published 14 January 2003 We make a step towards quantum nanoplasmonics: surface plasmon fields of a nanosystem are quantized and their stimulated emission is considered. We introduce a quantum generator for surface plasmon quanta and consider the phenomenon of surface plasmon amplification by stimulated emission of radiation (spaser). Spaser generates temporally coherent high-intensity fields of selected surface plasmon modes that can be strongly localized on the nanoscale, including dark modes that do not couple to far-zone electromagnetic fields. Applications and related phenomena are discussed. © 2003 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.90.027402
DOI:
10.1103/PhysRevLett.90.027402
PACS:
78.67.–n, 42.50.–p, 78.20.Bh, 78.45.+h
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