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.
Citations
More filters
TL;DR: In this paper, the authors reported the preparation and crystal structure of 3-methyl-4-methoxy-4′-nitrostilbene (MMONS), which is the largest measured powder SHG efficiency reported to date.
125 citations
TL;DR: A series of ionic stillbazolium salts with benzenesulfonates with different substituents in the para positien bave have been synthesized, single crystals of 4-N,N-dimethylamino-4'-N'-methyl stillbrazolium p-methoxybenzenes sulfonate (DSMOS) were successfully grown in methanol solution by slow cooling as mentioned in this paper.
Abstract: A series of ionic stillbazolium salts with benzenesulfonates with different substituents in the para positien bave been synthesized, Single crystals of 4-N,N-dimethylamino-4'-N'-methylstillbazolium p-methoxybenzenesulfonate (DSMOS) were successfully grown in methanol solution by slow cooling. X-ray suclies revealed that DSMOS crystallized in the triclinic space group P1 with its modecular clipoles perfectly aligned in one direction-favorable for large nonlinear optical and electro-optical effects. Kurrtz powder tests revealed a large powder second-harmonic generation efficncy that is surillar to that of the well-studied 4-N,N-dimethylamino-4'-N'-methylstilbazolium tosylate (DAST).
121 citations
TL;DR: In this article, the structure and nonlinear optical properties of organometallic systems are described. But the most popular complexes subjected to NLO study are ferrocenyl and alkynyl complexes, and these are the most stable of the organometallics, satisfying an important materials requirement for putative applications.
Abstract: Publisher Summary This chapter describes the structure and nonlinear optical (NLO) property relationships for organometallic systems. Both quadratic and cubic molecular nonlinearities obtained for specific complexes are extremely large, suggesting that the potential for application of organometallics still remains. The most popular complexes subjected to NLO study are ferrocenyl and alkynyl complexes—reassuring that these are the most stable of organometallics, thereby satisfying an important materials requirement for putative applications. NLO behavior arises from the interaction of electromagnetic fields with matter. The consequent generation of new field components (differing in amplitude, phase, frequency, path, polarization, etc.) is of enormous technological importance for optical devices, with potential applications in data storage, communication, switching, image processing, and computing. These applications have generated a need for materials with exceptional NLO properties and satisfactory materials properties (processing, stability, etc.). Two unit systems are commonly employed in describing NLO properties: the SI (MKS) and the Gaussian (cgs) systems. This chapter describes a number of popular techniques used for the measurement of second- and third-order NLO properties of organometallic molecules.
120 citations
TL;DR: In this article, a poly (pphenylene vinylene)/solgel silica composite is investigated by time-resolved forward wave degenerate four-wave mixing, Kerr gate, and transient absorption techniques using 60 fs pulses at 620 nm.
Abstract: Femtosecond response and relaxation of the third‐order optical nonlinearity in a newly developed poly (p‐phenylene vinylene)/sol‐gel silica composite are investigated by time‐resolved forward wave degenerate four‐wave mixing, Kerr gate, and transient absorption techniques using 60 fs pulses at 620 nm. Using a theoretical description of two‐ and four‐wave mixing in optically nonlinear media, it is shown that the results obtained from simultaneous use of these techniques yield valuable information on the real and imaginary components of the third‐order susceptibility. In the composite material investigated here, the imaginary component is derived from the presence of a two‐photon resonance at the wavelength of 620 nm used for the present study. This two‐photon resonance is observed as transient absorption of the probe beam induced by the presence of a strong pump beam. It also provides fifth‐order nonlinear response both in transient absorption and in degenerate four‐wave mixing. The fifth‐order contributions are derived from the two‐photon generated excited species which can absorb at the measurement wavelength and therefore modify both the absorption coefficient and the refractive index of the medium.
117 citations
01 Jul 2015
TL;DR: In this article, the authors present a survey of the applications of organic electro-optic waveguides, switches, and modulators in the field of nonlinear optical effects.
Abstract: 1. Introduction 2. Nonlinear optical effects 3. Electro-optic effects 4. Molecular nonliner optics 5. Acentric self-assembled films 6. Crystalline materials 7. Electrically poled organic materials and thermo-optic materials 8. Overview of applications 9. Organic electro-optic waveguides, switches, and modulators 10. Nonliner optical infrared and terahertz frequency conversion 11. Photorefractive effect and materials 12. Conclusions and future prospects.
116 citations