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Optical Engineering

New nonlinear optical materials from living matter
Author(s): Mihaela A. Ghelmez; Maria Honciuc; Mihai C. Piscureanu; Cristian Gheorghe
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Paper Abstract

There is current interest in organic materials for use in optoelectronics. The dielectric properties of these materials have proved compatible with low biasing powers, and some methods to improve them have been proposed. We discuss some fatty acids and mixtures of fatty acids, as well as fatty acid–cholesterol, all of them having an important role in biological membranes. They have smectic liquid-crystalline properties in some temperature ranges, this state being involved in the mechanisms determining health and illness. They can be used also in optoelectronic applications, because of the huge optical nonlinearity in the mesomorphic domain. The external self-focusing of a laser beam and nonlinear optical activity have been observed experimentally; by studying the modification of laser pulses in such media, the cholesterol percentage could be estimated. Also the interaction, at different wavelengths, with coherent and noncoherent light was studied.

Paper Details

Date Published: 1 May 1996
PDF: 5 pages
Opt. Eng. 35(5) doi: 10.1117/1.600693
Published in: Optical Engineering Volume 35, Issue 5
Show Author Affiliations
Mihaela A. Ghelmez, Kungliga Tekniska Hoegskolan (Romania)
Maria Honciuc, Polytechnic Institute of Bucharest (Romania)
Mihai C. Piscureanu, Politehnica Univ. of Bucharest (Romania)
Cristian Gheorghe, Clinical Hospital Fundeni Bucharest (Romania)


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