About cookies on this site Our websites require some cookies to function properly (required). In addition, other cookies may be used with your consent to analyze site usage, improve the user experience and for advertising. For more information, please review your options. By visiting our website, you agree to our processing of information as described in IBM’sprivacy statement. To provide a smooth navigation, your cookie preferences will be shared across the IBM web domains listed here.
Publication
Optics and Laser Technology
Paper
Optically non-linear organic materials
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.