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Proceedings Paper

Nonlinear optical properties and nonlinear optical probes of organic materials
Author(s): Gerald R. Meredith
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Paper Abstract

Nonlinear optical processes and electro-oplical effects are expected to have increasing importance as the information age matures and photonics augnnt electronics in various high density and high bandwidth technologies. Whereas for electronics the emphasis is in construction of smaller device structures from a few parent materials, for organic materials the direction of materials research has been reversed. For some time it's been known that some molecular structures engender exceptionally large molecular nonlinear-polarization responses. If such molecules could be assembled in convenient, versatile and reliable ways, the resulting materials would be very useful or even enabling in various photonics applications. The mature science and art of chemistry allows very good control over molecular composition and structure and, as will be illustrated in this talk, our knowledge of hyperpolarizability structureproperty relationships is advancing rapidly. However, the science of fabrication and arrangement in molecular ensembles and polymers is rather primitive. Thus the goal to develop the appropriately structured materials for utilization in nonlinear and electro-optics has fostered the widespread use of nonlinear optical processes to probe the nature of supramolecular order and assembly. Examples of intrinsic and artificially assembled structures of crystals, molecular aggregates, polymeric orientational electrets and molecular mono-and multi-layer thin films will be shown. Nonlinear optical processes primarily optical processes primarily optical second-harmonic generation, provide unique probes of these structures, their assembly and evolution.

Paper Details

Date Published: 1 February 1992
Proc. SPIE 1599, Recent Advances in the Uses of Light in Physics, Chemistry, Engineering, and Medicine, (1 February 1992); doi: 10.1117/12.2322289
Show Author Affiliations
Gerald R. Meredith, DuPont Co. (United States)

Published in SPIE Proceedings Vol. 1599:
Recent Advances in the Uses of Light in Physics, Chemistry, Engineering, and Medicine

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