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Nonlinear Optical Properties of Polyelectrolyte Thin Films Containing Gold Nanoparticles Investigated by Wavelength Dispersive Femtosecond Degenerate Four Wave Mixing (DFWM)
Author(s) -
Schrof Wolfgang,
Rozouvan Stanislav,
Keuren Edward Van,
Horn Dieter,
Schmitt Johannes,
Decher Gero
Publication year - 1998
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/(sici)1521-4095(199803)10:4<338::aid-adma338>3.0.co;2-v
Subject(s) - materials science , femtosecond , surface plasmon resonance , nanoparticle , plasmon , polyelectrolyte , four wave mixing , surface plasmon , colloidal gold , wavelength , dispersion (optics) , nonlinear optics , mixing (physics) , optics , optoelectronics , localized surface plasmon , relaxation (psychology) , molecular physics , nanotechnology , laser , polymer , physics , composite material , psychology , social psychology , quantum mechanics
The nonlinear optical (NLO) properties of gold nanoparticles embedded in polyelectrolyte multilayer thin films, in particular the dispersion of the third‐order nonlinearity and its relaxation around the plasmon band, have been investigated by femtosecond wavelength dispersive degenerate four wave mixing. The experimental results are discussed in terms of a simple model for the third‐order optical nonlinearity of nanoparticle systems. The results demonstrate that not only is the color of metallic nanoparticles dominated by surface plasmon optical resonance but surface plasmons govern NLO phenomena as well.