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Optical Engineering

Intensity Dependent Index Of Refraction In Organic Materials
Author(s): G. M. Carter; Y. J. Chen; S. K. Tripathy
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Paper Abstract

Because of the large variety of materials and material forms available, organic materials are attractive candidates for ultrafast nonlinear optical signal processing systems based on the intensity-dependent index of refraction, i.e., the change of index of refraction with a change in applied optical intensity. As an example, we consider an organic polymeric system, the polydi-acetylenes. Through molecular engineering (organic synthesis and Langmuir-Blodgett film growth combined with monolayer deposition techniques), the polydiacetylene was prepared in the technologically important format of a planar waveguide on a grating. By measuring the change in the angle that the incident laser radiation couples into the guided-wave mode (via the grating) with the change in intensity of the laser radiation, we determined the intensity-dependent index of refraction to be 10-6 (MW/cm2)-1 in the transparent region of the material. Implications of this reseach for future work related to signal processing applications are discussed.

Paper Details

Date Published: 1 August 1985
PDF: 4 pages
Opt. Eng. 24(4) 244609 doi: 10.1117/12.7973537
Published in: Optical Engineering Volume 24, Issue 4
Show Author Affiliations
G. M. Carter, GTE Laboratories, Inc. (United States)
Y. J. Chen, GTE Laboratories, Inc. (United States)
S. K. Tripathy, GTE Laboratories, Inc. (United States)

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