I. V. Soltys

The investigation of the peculiarities of the motion of testing nanoobjects in the inhomogeneously-polarized optical field

The paper proposes for consideration an additional possibility to evaluate the degree of coherence of superposing mutually orthogonal linearly-polarized in the incidence plane waves. When analyzing the behavior of various-type particles (Mie and Rayleigh) in the inhomogeneously polarized optical field and in the inhomogeneous field of the averaged values of the Poynting vector, we obtain an additional tool for defining the degree of coherence of interacting fields. The spatial modulation of polarization in the observation plane shapes the spatial modulation of the energy density volume, which changes the velocity of the particle motion according to the coherence characteristics of the superposing fields and to the resulting optical force that causes the motion and trapping of the tested particles.

The polarization peculiarities of the correlation (Intrinsic Coherence) of optical fields

The statement is substantiated that the experimental estimation of the degree of correlation of statistical vector optical fields must include not only the measurement of the visibility of the interference pattern, but also the deepness of the polarization modulation (degree of polarization) in the resulting spatial distribution of a field.

Influence of the Brownian movement on the motion of nanoand micro-particles in the inhomogeneous optical field

The motion of light scattering particles of the Mie and Rayleigh micro- and nano-range type in the inhomogeneously-polarized optical field, with allowance made for the Brownian movement, is analysed in the paper. The spatial modulation of polarization in the observation plane determines the spatial modulation of the volume energy density. That is why the velocity and the resulting optical force, which cause the motion of the testing particles, change according to the degree of coherence of the interacting fields. The influence of the forces which arise in the viscous medium and cause the Brownian movement upon the mechanisms of manipulating and trapping testing particles by the optical field is studied.

The Use of New Approaches to Estimating the Coherence Properties of Mutually Orthogonal Beams

theoretical model for calculating the motion dynamics of the particles of different light-scattering mecha- nisms in the energy inhomogeneous optical field is suggested. The direct relationship between the motion velocity of the tested particles in the created field and the degree of coherence of mutually orthogonal linearly polarized plane waves is demonstrated. The possibilities of using the normalized value of the averaged velocity for particles of the !100 sizes to define the degree of coherence of mutually orthogonal linearly polarized fields are shown.

Production of storage elements: new approaches and solutions

The media of layered crystals as a possible element of memory in the storage systems were analyzed, the manipulation mechanisms of which are carried out with polarization of incident radiation. The phenomenon of polarization optical bistability in the medium of layered crystals was obtained, in which the transmission band is managed with only the change of polarization of incident radiation. On the basis of the mechanism of polarization control of nanoparticles motion in the tasks of polarization diagnostics of optical fields, the estimation of the coherent features of mutually orthogonal linearly polarized optical fields was performed that also enables to analyze the terms of storage of information about the structure of an optical field.

New Opportunities For Biomedicine

Theoretical and experimental approaches to diagnosing of internal spin and orbital optical flows and corresponding optical forces caused by these flows are offered. These approaches are based on the investigation of the motion of tested particles in the formed optical field. The dependence of the above-mentioned forces upon the size and optical properties of the particles is demonstrated. It is shown that the use of energy internal flows permits to create such optical tweezers which can control particles only by polarization of the incident radiation without changing the form of the beam and its intensity.

The use of the Rayleigh nanoparticles to diagnose optical currents and optical fields

Theoretical and experimental approaches to diagnosing of internal spin and orbital optical flows and corresponding optical forces caused by these flows are offered. These approaches are based on the investigation of the motion of tested particles in the formed optical field. The possibility of using kinematic values defining the motion dynamics of particles of the Rayleigh light scattering mechanism for making a quantitative assessment of the degree of coherence of mutually orthogonal linearly polarized in the incidence plane waves is demonstrated.

The Metrology of Optical Fields Using Nanomanipulation

Taking into consideration the modern tendencies for developing nanotechnologies, much attention is paid to studying the behaviour of micro- and nanoparticles and the ways of controlling them [1-4]. To do this the micromanipulators and micromachines are needed. As a rule, beams of various nature, which reflect different forms of energy circulation [2], are used for these purposes. The formation of energy redistribution and energy circulation fields can occur in a simpler case as well. This research proposes the interaction scheme of two mutually orthogonal linearly polarized waves in the incidence plane, where the modulation of polarization and the modulation of the volume energy density occur simultaneously in the observation plane [5]. In this case the depth of the energy volume density modulation essentially depends on the degree of coherence of interacting waves. The way of monitoring particles of the Rayleigh light scattering mechanism in the energy inhomogeneous optical field is proposed for investigation. The task of defining the degree of coherence of mutually orthogonal linearly-polarized plane waves using the particle motion velocity in the created optical field is solved as well.

A new method for estimating the degree of coherence of mutually orthogonal linearly polarized interacting waves

An additional possibility for estimating the degree of coherence of interacting fields when classic methods of diagnostics cannot be applied is offered.

Diagnostics of optical fields and media in the framework of the polarization approaches

The media of layered crystals as a possible element of memory in the storage systems were analyzed, the manipulation mechanisms of which are carried out with polarization of incident radiation. The phenomenon of polarization optical bistability in the medium of layered crystals was obtained, in which the transmission band is managed with only the change of polarization of incident radiation. On the basis of the mechanism of polarization control of nanoparticles motion in the tasks of polarization diagnostics of optical fields, the estimation of the coherent features of mutually orthogonal linearly polarized optical fields was performed that also enables to analyze the terms of storage of information about the structure of an optical field.