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13 August 1993 Studies towards molecular optoelectronic devices
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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.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Shammai Speiser "Studies towards molecular optoelectronic devices", Proc. SPIE 1972, 8th Meeting on Optical Engineering in Israel: Optoelectronics and Applications in Industry and Medicine, (13 August 1993);

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