Rayleigh scattering, nonlinear optics

Cp Ru[H5C5B-C=C(C5H4)FeCp]+ nonlinear optics application S, X, H, C, IR, UV, E, hyper-Rayleigh scattering 20... 

The ethynyl-linked complexes 105 were prepared and explored as potential building blocks for nonlinear optical (NLO) materials.129 Spectroscopic and cyclic voltammetry data indicate a small but real interaction between the ferrocenyl donor group and the borabenzene unit, increasing in the order RuHyper-Rayleigh scattering revealed small values for the first hyperpolarizability / , which increases in the same order. 

Stimulated effects in nonlinear optics, such as stimulated Brillouin and Raman scattering in liquids and gases and stimulated thermal Rayleigh scattering, have been reviewed by Rank 260a)... 

Keywords nonlinear optics, hyperpolarizability, hyper-Rayleigh scattering, photonic crystals, photonic bandgap materials... 

The generic experiment in hyper-Rayleigh scattering4 consists of measuring the intensity of the second harmonic l(2a>) that is scattered by a fundamental laser beam impinging on a solution of nonlinear optical chromophores in a suitable solvent. This intensity should be quadratically dependent on the fundamental intensity l(o>). 

Gold nanoparticles have large second- and third-order nonlinear susceptibilities and are therefore a promising class of nonlinear optical materials.214 We will briefly discuss several nonlinear optical processes from metal nanoparticles, such as multiphoton luminescence, hyper-Rayleigh scattering, and multiharmonic generation. 

Kaatz, P. and Shelton D.P., Polarized hyper-Rayleigh light scattering measurements of nonlinear optical chromophores. J. Am. Chem.SOc. (1996) 105 3918-3929. 

Abe, J., Shirai. Y., Nemoto, N., Miyata, F., Nagase, Y. Heterocyclic piridinium betaines, a new class of second-order nonlinear optical materials Combined theoretical and experimental investigation of first-order hyperpolarizability through ab initio, INDO/S, and hyper-rayleigh scattering. J. Phys. Chem. B 101, 576-582 (1997)... 

Most linear optical phenomena such as refraction, absorption and Rayleigh scattering are described by the first term in Eq. (1) where is the linear susceptibility tensor. The higher order terms and susceptibilities are responsible for nonlinear optical effects. The second-order susceptibility tensor T underlies SFG, whereas and BioCARS arises within As we are concerned with optical effects of randomly oriented molecules in fluids, we need to consider unweighted orientational averages of the susceptibility tensors in Eq. (1). We will show that the symmetries of the corresponding isotropic components and correspond to time-even pseudoscalars the hallmark of chiral observables [2]. 

Vance, F.W., Hupp, J.T. Probing the symmetry of the nonlinear optic chromophore Ru(trans-4.4 -diethylaminostyryl-2, 2 -bipyridine)3 + insight from polarized hyper-Rayleigh scattering and electroabsorption (Stark) spectroscopy. J. Am. Chem. Soc. 121, 4047-4053 (1999)... 

Clays and Persoons presented a new technique in 1992 for the determination of the hyperpolarizabilities of nonlinear optical compounds in solution using the hyper-Rayleigh scattering (HRS). The values for first hyperpolarizabilities can be obtained from second-order scattered light intensity. This method has several advantages over the EFISH technique it needs no electric field, and thus the experiment is simplified, the hyperpolarizability P can be directly measured, and the P values for salts can be determined as weU. 

Clays K, Persoons A and De Maeyer L (1993) Hyper-Rayleigh scattering in solution. Modern nonlinear optics, part 3. Advances in Chemical Physics 85 455-498. 

See also Matrix Isolation Studies By IR and Raman Spectroscopies Nonlinear Optical Properties Nonlinear Raman Spectroscopy, Instruments Nonlinear Raman Spectroscopy, Theory Photoacoustic Spectroscopy, Theory Raman Optical Activity, Applications Raman Optical Activity, Theory Rayleigh Scattering and Raman Spectroscopy, Theory Surface-Enhanced Raman Scattering (SERS), Applications. 

E., Szablewski, M., and Cross, G.H. (2008) Accurate determination and modeling of the dispersion of the first hyperpolarizability of an efficient zwitte-rionic nonlinear optical chromophore by tunable wavelength hyper-rayleigh scattering. /. Phys. Chem. C, 112, 287-296. 

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