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Title: Modified Kramers-Kronig relations and sum rules for meromorphic total refractive index

Journal Article · · Physical Review. A
;  [1];  [2]
  1. Department of Physics, University of Joensuu, P. O. Box 111, FIN-80101 Joensuu, (Finland)
  2. Department of Physics, Lappeenranta University of Technology, P. O. Box 20, FIN-53851 Lappeenranta, (Finland)

Modified Kramers-Kronig relations and corresponding sum rules are shown to hold for the total refractive index that can be presented as a sum of complex linear and nonlinear refractive indices, respectively. It is suggested that a self-action process, involving the degenerate third-order nonlinear susceptibility, can yield a negative total refractive index at some spectral range.

OSTI ID:
20640120
Journal Information:
Physical Review. A, Vol. 68, Issue 2; Other Information: DOI: 10.1103/PhysRevA.68.025802; (c) 2003 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
Country of Publication:
United States
Language:
English