Anomalous-dispersion phase-matched second-harmonic generation.

We have demonstrated anomalous-dispersion phase-matched second-harmonic generation, using electric-field-induced second-harmonic generation in a liquid solution of Foron Brilliant Blue S-R (FBB). This dye has a sharp absorption maximum near 620 nm and a deep absorption minimum near 450 nm. The microscopic hyperpolarizability (beta) of FBB was measured at 1.58 and 0.954 microm and was found to be 163 x 10(-30) and -118 x 10(-30) cm(5)/esu, respectively. The change in sign of beta and the observation that beta(0), a frequency-independent measure of hyperpolarizability, is the same at both frequencies demonstrate the validity of the two-state model of the second-order hyperpolarizability.

[1]  J. Oudar,et al.  Optical nonlinearities of conjugated molecules. Stilbene derivatives and highly polar aromatic compounds , 1977 .

[2]  J. Oudar,et al.  Hyperpolarizabilities of the nitroanilines and their relations to the excited state dipole moment , 1977 .

[3]  P. Cahill.  Nonlinear Optical Waveguides Containing A Transition Metal-Based Dye Molecule , 1987 .

[4]  H. Zollinger,et al.  A comparison of the absorption spectra of a series of blue disperse dyes with the colorimetric evaluation of their dyeings , 1987 .

[5]  Kenneth D. Singer,et al.  Second-order nonlinear-optical properties of donor- and acceptor-substituted aromatic compounds , 1989 .

[6]  Kenneth D. Singer,et al.  Measurements of molecular second order optical susceptibilities using dc induced second harmonic generation , 1981 .

[7]  F. Zernike.  Temperature-Dependent Phase Matching for Far-Infrared Difference-Frequency Generation in InSb , 1969 .

[8]  P. Liao,et al.  Enhanced production of coherent vuv radiation by four‐wave mixing in Sr vapor , 1977 .

[9]  N. Bloembergen,et al.  Interactions between light waves in a nonlinear dielectric , 1962 .

[10]  S. Brueck,et al.  Efficient phase-matched infrared third-harmonic generation in liquid CO-O2-SF6mixtures. , 1978, Optics letters.

[11]  K. Drexhage,et al.  Efficient phase-matched third harmonic light generation in hexafluoroisopropanol solutions of a pyrimidonecarbocyanine dye , 1987 .

[12]  Kenneth D. Singer,et al.  Second harmonic generation in poled polymer films , 1986 .