This paper presents the investigation results of temporal chaotization of optical field scattered by liquid crystals during phase transition liquid – liquid crystal under electric field. It is established that maximum of temporal chaotization scattered field is observed under the temperature of phase transition liquid – liquid crystal and one doesn’t dependence of liquid crystal thickness. We found that minimum of temporal chaotization of near-field and scattered field is observed at formation Williams’s domains corresponding to the attached 9V voltage.
Diffraction of light on an amplitude and phase fractal objects of Serpinski carpet was calculated. It has been shown that for a phase fractal object and for an amplitude object in the field there are areas, analogical to the areas of selfreproduction of minimum element.
Light-scattering by the ensemble of Brownian particles is simulated and experimentally modeled. It has been shown that temporal stochastization of the scattered radiation field keeps the fractal properties of the particles movement. Empirical diagnostics interconnections have been found between the fractal dimension and fluctuations of the scattered radiation intensity, on the one hand, and the parameters of light-scattering medium, on the other.
The influence of phase relations and the degree of mutual coherence of superimposing waves in the arrangements of twowave
superposition on the characteristics of the microparticle's motion has been analyzed. The prospects of studying
temporal coherence using the proposed approach are made. For the first time, we have shown experimentally the
possibility of diagnostics the optical currents in liquids caused by polarization characteristics of an optical field alone,
using test metallic particles of nanoscale.
Experimental interference modeling of the effects of coloring of a beam traversing a light-scattering medium is presented. It is shown that the result of coloring of the beam at the output of the medium depends on the magnitudes of the phase delays of the singly forward scattered partial signals. Spectral investigation of the effects of coloring has been carried out using the solution of liquid crystal in polymer matrix. The amplitude ratio of the non-scattered and the singly forward scattered interfering components also affects the color intensity significantly. It has further been established that the spectral content of the illuminating beam strongly influences the color of the resulting radiation.
The computer simulation of scattering of light by fractal clusters is carried out. It has been established that temporal
space of the scattered radiation field holds the fractal properties of cluster. Empirical diagnostic interconnections have
been found between the statistic and stochastic parameters of intensity fluctuation of the scattered radiation field, on the
one hand, and the parameters of light-scattering cluster, on the other hand.
The feasibilities for optical correlation diagnostics of a rough surface with large surface inhomogeneities by determining the
transformations of the longitudinal coherence function of the field scattered by such surface are substantiated and
implemented. The algorithm of computer processing of the interferograms for reconstruction of the relief of regular surfaces
with resolution 0.5 nm is represented.
New feasibilities are considered for optical correlation diagnostics of rough surfaces with different distributions of
irregularities. The influence of deviations of the height surface roughness distribution from a Gaussian probability
distribution on the accuracy of optical analysis is discussed. The possibilities for optical diagnostics of fractal surface
structures are shown and the set of statistical and dimensional parameters of the scattered fields for surface roughness
diagnostics is determined. Finally, a multifunctional measuring device for estimation of these parameters is proposed.
The feasibilities for optical correlation diagnostics of a rough surface with large surface inhjmogeneities by
determining the transformations of the longitudinal coherence function of the field scattered by such surface are
substantiated and implemented.
The technique of computer design of the parameters of the electromagnetic field reflected by the FEHU rune is shown.
The geometrical optics techniques are used for the exact analysis of the phase vibrations reflected by the rune. We
demonstrate influencing of the Fehu rune on same bio-object parameters, which were used as the detector of action.
The feasibilities for optical correlation diagnostics of a rough surface with large surface inhjmogeneities by determining the
transformations of the longitudinal coherence function of the field scattered by such surface are substantiated and
implemented.
The principles and the practical conditions for registration of phase singularities, such as optical vortices in the spectral
components of white light, are discussed. Interference diagnostics of white light vortices in a polychromatic specklefield
is reported for the first time.
The principles and the practical conditions for registration of phase singularities, such as optical vortices in the spectral components of white light, are discussed. Interference diagnostics of white light vortices in a polychromatic speckle-field is reported for the first time.
The principles and the practical conditions for registration of phase singularities, such as optical vortices in the spectral
components of white light, are discussed. Interference diagnostics of white light vortices in a polychromatic speckle-field is
reported for the first time.
The technique of an inverted chromascope is introduced for determining the loci of amplitude zeroes for the spectral
components constituting a polychromatic radiation field. Applications of this technique for processing of experimentally
obtained (both by birefringence and for speckle fields) light distributions are demonstrated.
The feasibilities of using interferometric and chromascopic techniques in the diagnostics of phase singularities and in the
study of a phase structure of the field in their vicinity are demonstrated. The peculiar evolution of singularities into
caustics produced by phase elements of singularity-generating objects of spherical and cylindrical shape are studied.
The feasibilities of using interferometric techques in the diagnostics of phase singularities and in the study of a
phase structure of the field in their vicinity are demonstrated. The peculiar evolution of singularities into caustics
produced by phase elements of singularity-generating objects of spherical and cylindrical shape are studied.
Among the problems that are solved successfully within the concept of singular optical, one must emphasize:
the techniques for generation of isolated singularities (also called wave front dislocations, vortices, or amplitude
zeroes) in the field [ 1,2];
the topology of the network of amplitude zeroes for the speckle field at the model (qualitative) level [3-5];
the optical techniques for diagnostics of singularities for the field [6,7];
the use of singularities for the field in solving application problems, such as manipulating small particles (i.e. optical
traps and tweezers) [8,9].
The interest in the study of local amplitude and phase structures of the field in the vicinity of singularities, not only
for monochromatic radiation field but also for polychromatic fields, has considerably increased recently [3, 10-12].
Papers [13, 14] devoted to the study of the scenario and mechanisms of nucleation and evolution of singularities in the vicinity of caustics have appeared.
The computer and physical simulation scattering of light by the system of brownian particles is carried out. Is obtained, that temporary fluctuations of a field intensity saves chaotic properties of driving of particles. Is retrieved empirical diagnostic links of the largest Lyapunov exponent of fluctuations of a field intensity with parameters of the dispersive media.
Light-scattering by the ensemble of Brownian particles is simulated and experimentally modeled. It has been shown that temporal stochastization of the scattered radiation field, in contrast to spatial stochastization of this field, keeps the fractal properties of the particles movement. Empirical diagnostics interconnections have been found between the fractal dimension and correlation exponent of the scattered radiation intensity, on the one hand, and the parameters of light-scattering medium, on the other hand.
In this paper we represent the results of an investigation concerning to some peculiarities of reproduction of the triadic Cantor set structure at the diffracted optical field. For the input fractal of the 5'th level, image fractals of all levels from 1 to 4 are observed at the diffracted field. The use of the wavelet-transform provides a noise suppressing at the images of different levels. The experimental results are shown to be in a good agreement with ones obtained through computer simulation.
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