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Optica Publishing Group
  • Quantum Electronics and Laser Science Conference
  • OSA Technical Digest (Optica Publishing Group, 1989),
  • paper MDD4

Third-order nonlinear processes In molecules and polymers

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Abstract

The rapidly developing fields of optical image processing, optical fiber communication, and optronics (the counterpart of electronics) require highly efficient third-order nonlinear optical materials. Organic molecules and especially polymers offer very interesting opportunities: high damage threshold, large hyperpolarizability, and ease in processing. Among the polymers of special interest are conjugated 1-D π-electron systems such as polydiacetylenes, polyacetylenes, and polythiophenes. One-dimensional electron delocalization leads to an enhanced excitonic hyperpolarizability with subpicosecond response time. These materials can be obtained In the form of thin films, bulk single crystals, monocrystallites, and polyoriented and mono-oriented thin films. The physicochemical properties of these materials, their processability, and their optical gap width (domain of applications) are determined by the polymer and its sidegroups.

© 1989 Optical Society of America

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