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A comparison of molecular hyperpolarizabilities from gas and liquid phase measurements
The first and second hyperpolarizabilities (β and γ) of eight molecules at a fundamental wavelength of 1064 were measured by gas-phase electric-field-induced second-harmonic generation (EFISH),Expand
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Two-photon fluorescence cross-section measurements calibrated with hyper-Rayleigh scattering
The intensity of two-photon-excited fluorescence measured relative to the intensity of hyper-Rayleigh scattering in the same apparatus was used to determine the two-photon-excited fluorescence crossExpand
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Collision induced hyper-Rayleigh light scattering in CCl4
Measurements of hyper-Rayleigh scattering in carbon tetrachloride liquid and vapour indicate that interaction induced contributions account for more than half of the scattered intensity from theExpand
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First hyperpolarizability of new sulfonamide amphiphiles by calculation, and hyper-Rayleigh scattering
The first hyperpolarizability β of the 4-(4′-N-methyl-N-alkylaminophenylazo)-N-(thiazol-2-yl)benzenesulfonamides (1) and 4-(4′-N-methyl-N-alkylaminophenylazo)-N-(pyrimidin-2-yl)benzenesulfonamidesExpand
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Modified polyimide side-chain polymers for electrooptics
New modified styrene-maleic anhydride copolymers with pendent side group nonlinear optical (NLO) azo chromophores and moderate to high T g 's (140°C< T g < 190°C) have been prepared. Corona poledExpand
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Orientational Relaxation in Electric-Field-Poled Films from Main-Chain Nonlinear Optical Polyamides
The orientational relaxation of the NLO-phores in polyamides based on 2',5'-diamino-4-(dimethylamino)-4'-nitrostilbene (DDANS) and linear aliphatic diacid chlorides was investigated at differentExpand
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Modified polyimide side-chain polymers with high glass transition temperatures for nonlinear optical applications
Novel modified polyimide polymers with nonlinear optical chromophores as pendent side groups show high glass transition temperatures and large nonlinear optical coefficients up to d33 equals 78 pm/VExpand
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New Polyamides with Large Second-Order Nonlinear Optical Properties
A series of NLO polyamides based on the new monomer 2',5'-diamino-4-(dimethylamino)-4'-nitrostilbene has been synthesized. The polymers are amorphous and show T g 's up to 206°C. They can easily beExpand
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Novel Electro-Optic Polyimide and Polyamide Side Chain and Main Chain Polymers
There has been considerable interest in organic nonlinear optical (NLO) materials, because of their potential application in integrated electro-optical devices. A promising approach to theExpand
Side-chain-polyimide and main-chain-polyamide polymers for electro-optic applications
We report on the preparation of a series of polyimide-side-chain and polyamide-main- chain polymers for electro-optic applications. Thin films prepared by spin casting were analyzed for their linear,Expand