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Proceedings Paper

Studies towards molecular optoelectronic devices
Author(s): Shammai Speiser
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Paper Abstract

The present review describes all-optical devices based on appropriate organic materials that will operate on the intensity induced changes in the complex index of refraction, i.e., the absorptive and dispersive properties of the medium due to intensity induced population changes. Theory predicts that optical bistability can be observed in such materials, as well as realizing molecular SLMs. A kinetic analysis of a general multilevel nonlinear organic absorber is performed. The analysis is used to derive an expression for the complex nonlinear- molecular index of refraction. The properties of a molecular SLM based on this absorber are discussed as well as a similar device based on a photochromic material. In addition, the transient behavior of a triplet SLM at short time excitation is examined. Optical bistability based on the same nonlinear optical properties is also studied. The calculations are supported by a series of experiments in which novel materials based on intense triplet-triplet absorption are measured. These materials serve as the nonlinear media for prototype molecular SLMs, transient wave-guide switching and optical bistable elements.

Paper Details

Date Published: 13 August 1993
PDF: 14 pages
Proc. SPIE 1972, 8th Meeting on Optical Engineering in Israel: Optoelectronics and Applications in Industry and Medicine, (13 August 1993); doi: 10.1117/12.151084
Show Author Affiliations
Shammai Speiser, Technion--Israel Institute of Technology (Israel)

Published in SPIE Proceedings Vol. 1972:
8th Meeting on Optical Engineering in Israel: Optoelectronics and Applications in Industry and Medicine
Moshe Oron; Itzhak Shladov; Yitzhak Weissman, Editor(s)

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