Nonlinear optical properties of organic and polymeric materials
29 Sep 1983-
About: The article was published on 1983-09-29 and is currently open access. It has received 762 citations till now.
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13 Aug 1993
TL;DR: In this article, the authors describe 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.
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.© (1993) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
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...96 / SPIE Vol. 1972 8th Meeting on Optical Engineering in Israel (1992) Singlet monifd Triolet manifold ABSORBER (A) PHOTOISOMER...
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01 Jan 2017
TL;DR: In this stimulating context, organic nonlinear materials have been recognized as forefront candidates for investigations of fundamental and applied natures involving in a joint effort chemists, material scientists and optical physicists.
Abstract: processing functions. Conversely, nonlinear optical phenomena enlarge traditional spectroscopic approa-ches to encompass more complex and informative multiphotonic pathways. In this stimulating context,organic nonlinear materials have been recognized as forefront candidates for investigations of fundamentaland applied natures involving in a joint effort chemists, material scientists and optical physicists. After
TL;DR: In this paper, a good quality organic NLO single crystal of 2-Naphthalenol (2-N) was grown by slow solvent evaporation method and analyzed with different characteristic studies such as singl...
Abstract: A good quality organic NLO single crystal of 2-Naphthalenol (2 N) are grown by slow solvent evaporation method. The grown 2 N crystal is analyzed with different characteristic studies such as singl...
TL;DR: In this paper, the motion of low molecular compound (LMW) of which chemical structure is similar to the mesogenic groups of liquid crystalline main-chain (LCP) in LCP/LMW composite system was studied by means of dielectric measurements and director order parameter (Sd) determinations.
Abstract: In order to explore the motion of low molecular compound (LMW) of which chemical structure is similar to the mesogenic groups of liquid crystalline main-chain (LCP) in LCP/LMW composite system was studied by means of dielectric measurements and director order parameter (Sd) determinations by dielectric relaxation spectroscopy. The unaligned PLC exhibits a dielectric absorption of the α-relaxation process occurs in the glassy state. On the other hand, the unaligned material including 40 mol% of LMW in composite system exhibits a new dielectric absorption, which is based on the λ-relaxation process as judged by the activation energy. The director order parameter (Sd) varied from 0.16 to -0.30. It found that the dielectric behavior of the PLC/LMW composite system is very similar to that of liquid crystalline side-chain polymers.