We realized a logical function of bit-to-bit parallel multiplication for optical echo-processor based on the third-order
nonlinear optical response of a resonant medium at room temperature. As an operating medium we used the
polyvinilbutural film doped with phthalocyanine dye. The result of the logical operation is presented in the spectrum of
the nonlinear optical response after action of the two spectrally coded pumping pulses. The time of the logical operation
is about 500 fs. We obtained the values of a homogeneous broadening of S<sub>0</sub> - S<sub>1</sub> line: Γ<sub>hom</sub> = 89 cm<sup>-1</sup> at <i>T </i>= 300 K and
Γ<sub>hom</sub> = 44 cm<sup>-1</sup> at <i>T</i> = 77 K. The laser excitation parameters needed for effective operating of optical processor are
defined. The maximum word length achievable under current experimental conditions is estimated.
Nanocomposite materials on the basis of semiconductor nanoparticles such as CdS are special interest for use in many
fields of a science and technique: optics, electrochemistry and optoelectronics. Non-linear optical properties of the
composite materials depend on a size, a shape and features of synthesis methods. The sample was investigated is a film
of 0.3 mm thickness. The size of nanoparticles (2.5 nm) was characterized by method of X-ray powder diffraction. The
green luminescence in 529 nm range is due to the radiative recombination of electron-hole pairs. The red luminescence
in 640 nm range is due to the radiative recombination of the exciton trapped in the nanocomposite defect states. We
observed the generation of the second harmonic in the range of 400 nm by pumping 790 nm laser pulses. The
luminescence intensity I in the range of 400 nm and 529 nm as a function of the excitation density energy P are
correspond to the function I ~ P<sup>n</sup>. For the band at 529 nm range n =3 that correspond two- (400 nm) and three- (267 nm)
at 800 nm excitation.
We demonstrate experimentally the laser control of the nonstationary anisotropy of polarizability in a pure liquid of
demethilformamide (CH<sub>3</sub>)<sub>2</sub>NCOH at room temperature. The experiment is based on the nonresonant medium excitation
by a sequence of two linear polarized laser pulses with the duration of 60 fs. The state of medium is probed by the third
weak laser pulse with the registration of the ultrafast optical Kerr effect. We obtained that by using two parameters (the
delay between the pump pulses and the angle between the directions of the linear polarization of two pump pulses) the
molecular orientational anisotropy in liquid is controlled in the subpicosecond time scale.