Optical Second Harmonic Generation in Langmuir-Blodgett Films

  • Tommy Geisler
Part of the NATO ASI Series book series (NSSB, volume 312)


Materials displaying nonlinear optical (NLO) effects are attracting increasing interest because of their potential applications in devices for processing optical information in optical communication systems1–2. Many organic materials have been shown to possess very large nonlinearities which can be attributed to the highly polarisable π—electrons3. A large molecular hyperpolarizability, β, responsible for second-order effects can be achieved in the charge asymmetric donor-acceptor molecules. However, to achieve large bulk second-order effects it is necessary to arrange the individual molecules in a noncentrosymmetric structure in order to avoid cancellation of the individual molecular nonlinearities.


Harmonic Intensity Local Field Factor Second Harmonic Generation Measurement Linear Fresnel Noncentrosymmetric Structure 
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Copyright information

© Springer Science+Business Media New York 1993

Authors and Affiliations

  • Tommy Geisler
    • 1
  1. 1.Danish Institute of Fundamental MetrologyLyngbyDenmark

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