Publication
Optics and Laser Technology
Paper

Optically non-linear organic materials

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Abstract

A large number of non-linear organic materials have been investigated by second-harmonic generation (SHG) in powders. The materials studied include several urea derivatives, sterically perturbed anilines and pyridines, and substituted stilbenes. Several compounds have been found with both a very large second-order non-linearity and a high optical damage threshold. Many compounds, even though known to possess large molecular hyperpolarizabilities, showed no detectable SHG, indicating a centrosymmetric crystal point group. The results are interpreted in terms of bond configuration, charge transfer and crystal structure. The use of good non-linear organic materials in integrated non-linear optics is discussed. © 1981.

Date

01 Jan 1981

Publication

Optics and Laser Technology

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