Nonlinear Optical Properties Of Organic Molecules And Crystals Pdf
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- Journal of the Optical Society of America B
- Nonlinear Optical Properties of Organic Molecules and Crystals V1
- Linear and nonlinear optical properties of organic crystals: MBANP and its derivatives
Sudhahar, M. Krishna Kumar, A. Silambarasan, R.
Journal of the Optical Society of America B
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Nonlinear Optical Properties of Organic Molecules and Crystals V1
The structure of a series of 4-methoxyphenylpolyenals and furylpolyenals have been calculated at the AM1 level. The hyperpolarisabilities of these systems calculated using a semi-empirical sum-overstates approach increase with increasing conjugation path length between the aromatic ring and the terminal aldehyde group. The initial members of the series in both cases are transparent, possess relatively large hyperpolarisabilities which are comparable to molecules containing strong donors and acceptors, and have potential application as materials for second harmonic generation. If you are not the author of this article and you wish to reproduce material from it in a third party non-RSC publication you must formally request permission using Copyright Clearance Center. Go to our Instructions for using Copyright Clearance Center page for details.
Studies of the basic physics of nonlinear second order optical processes in solids remain critically important to the field of nonlinear optics and to further advances in telecommunications technologies. This fact receives continued emphasis today in problems of current interest such as phase conjugation and optical bistability. Research activities have centered on second order optical processes occurring in inorganic dielectric insulators and semiconductors primarily because of the important scientific achievements and resultant large body of available information from earlier studies of piezoelectric and ferroelectric properties and semiconductor transport. Consequently, nearly all of the nonlinear optical materials widely under study are inorganic solids. Recently, however, much interest has focused on organic and polymeric solids basically due to their exceptionally large nonlinear second order optical properties and the promise of virtually unlimited numbers of crystalline structures.
Linear and nonlinear optical properties of organic crystals: MBANP and its derivatives
Glycinium Phosphite GlP has been synthesized and characterized successfully. The fluorescence spectrum of the compound showed one broad peak at nm. Linear absorption value was calculated by Optical Limiting method. Birefringence study was carried out and the birefringence of the crystal is found to be depending on the wavelength in the entire visible region.
The requirement for materials which exhibit good second and third order non-linear optical properties and also for materials which could sense metals in trace quantities has kindled renewed investigations. Organometallics and coordination compounds show a lot of promise as new NLO materials combining the variety of organic moieties with the strength and variable oxidation states of metals. Especially ligands which selectively detect industrial pollutants like Cd and biologically significant metals like Zn are necessary.
Nonlinear Optical Properties of Organic Molecules and Crystals, Volume 1 discusses the nonlinear optical effects in organic molecules and crystals, providing a classical distinction between quadratic and cubic processes. This book begins with a general overview of the basic properties of organic matter, followed by a review on the benefits derived from quantum-chemistry-based models and growth and characterization of high quality, bulk organic crystals and waveguided structures. A case study focusing on a specific material, namely urea, which exemplifies a situation in which transparency in the UV region has been purposely traded for nonlinear efficiency is also deliberated. This text concludes with a description of a type of trade-off between the unpredictable orientation of molecules in crystalline media, polarity of liquid-crystalline structures, and dominant electronic contribution to the electro-optic effect. This publication is beneficial to solid-state physicists and chemists concerned with nonlinear optical properties of organic molecules and crystals.
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