Specific complex-oxide crystals with strong nonlinear absorption and nonlinear refraction as promising optical materials

Two photon absorption, nonlinear refraction, and optical limiting in semiconductors

Femtosecond Z-scan measurements of nonlinear refraction in nonlinear optical crystals

We report an investigation of third-order optical nonlinearities in several nonlinear optical crystals using the Z-scan technique with femtosecond laser pulses at 780 nm wavelength. The crystals studied include LiNbO3:MgO, KTiOAsO4, KTiOPO4, b-BaB2O4 and LiB3O5, which are extensively used for ultrashort-pulse second-harmonic generation and optical parametric oscillation. The nonlinear refractiv...

Push-Pull Porphyrins as Nonlinear Optical Materials

Due to their potential applications for optical communications, data storage, and electrooptical signal processing, molecules with nonlinear optical (NLO) properties have been extensively investigated.’ As part of our interest in porphyrins and metalloporphyrins as photoresponsive2 and field-responsive material^,^ we have synthesized a series of “push-pull” porphyrins containing both donor and ...

Nonlinear optical materials.

The current state of materials development in nonlinear optics is summarized, and the promise of these materials is critically evaluated. Properties and important materials constants of current commercial materials and of new, promising, inorganic and organic molecular and polymeric materials with potential in second- and third-order nonlinear optical applications are presented.

Z-scan measurements of the anisotropy of nonlinear refraction and absorption in crystals.

The techniques most often used to determine components of the third-order susceptibility, x(3), include degenerate four-wave mixing, 1 nearly degenerate threeand four-wave mixing, 2 ellipse rotation, 3 optical third-harmonic generation,4 photoacoustics,5 beam-distortion methods,6 8 and nonlinear transmission.9 Some of these have been adapted to measure the anisotropy of x<a) .2•5•6•9 We introdu...