Optical properties of one-dimensional semiconductors and conjugated polymers

We present a description of the optical properties of one-dimensional semiconductors within the one-electron tight-binding approximation. The case of conjugated carbon chains is explicity considered; the influence of the bond alternation...

C.，Cojan，G.，... - 《Physical Review B Condensed Matter》

Second and third order hyperpolarizabilities of organic molecules

We have used the technique of static field induced second harmonic generation in liquids to determine the second order hyperpolarizability β, and the thir...

BF Levine，CG Bethea - 《J.chem.phys》

Conjugated electron contributions to the second order hyperpolarizability of substituted benzene molecules

We present a simple theory which accounts for the magnitude and absolute sign of the second order hyperpolarizability β for substituted benzene molecules ...

BF Levine - 《Journal of Chemical Physics》

Rayleigh scattering depolarization ratio and molecular polarizability anisotropy for gases

The depolarization ratio for Rayleigh scattering by 39 molecular species are reported for 位= 488.0, 514.5 and 632.8 nm. The literature has been critically...

MP Bogaard，AD Buckingham，RK Pierens，... - 《Journal of the Chemical Society Faraday Transactions Physical Chemistry in Condensed Phases》

Anharmonic force field of acetylene

The harmonic and anharmonic force field of acetylene has been determined in a least-squares calculation from recently determined data on the spectroscopic ...

G Strey，IM Mills - 《Journal of Molecular Spectroscopy》

Direct Method of Measuring Molecular Quadrupole Moments

An experiment whose object is the determination of permanent molecular quadrupole moments is suggested. It is analogous to those used in measurements of el...

Buckingham，A. D - 《Journal of Chemical Physics》

Third‐order polarizabilities of long‐chain molecules

The third‐order polarizabilities of several alkanes and polyenes have been deduced from third harmonic measurements. For satured hydrocarbons, γ increase...

JP Hermann，J Ducuing - 《Journal of Applied Physics》

Nonlinear optical properties of organic crystals with hydrogen-bonded molecular units - The case of urea

The validity of simpler additive models, accounting for nonlinear optical properties of van der Waals crystals in terms of independent molecular contributi...

J Zyss，GJ Berthier - 《Chemischer Informationsdienst》

Molecular electric polarizabilities

The static electric dipole polarizabilities of acetylene and ethylene are calculated using the coupled Hartree-Fock approach and the so-called electric-fie...

AJ Sadlej - 《Theoretical Chemistry Accounts》

Optical Third Harmonic Generation in Gases by a Focused Laser Beam

Optical third-harmonic generation at 2314 using a focused ruby laser beam (6943 ) has been observed in a number of gases. A theory of third-harmonic generation by focused beams is presented which is used to derive atomic (or molecular) ...

JF Ward，GHC New - 《Physical Review》