Спосіб вимірювання мюллер-матричної орієнтаційної томограми полікристалічних мереж оптико-анізотропних шарів біологічних тканин

Abstract

A method for measurement of the Muller-matrix orientation tomogram of polycrystalline networks of optical-anisotropic layers of biological tissues in which laser beams with different polarizations for probing the layer of biological tissue are formed, with projection of the laser image to the plane of digital camera through rotary polarization filter, with measurement of coordinate distributions of intensity components with different intensities. The layer of biological tissue is probed with radiation from low-coherence semiconductor laser diode with wavelength of 0.64 µm, with formation of parallel laser beam with right circular polarization, in sequence it is passed through the three-channel polarizer forming a series of probing beams with polarization azimuths "0°"; "90°" and "45°", within each channel of probing by means of micro-objective which angular aperture is matched with indicatrix of diffusion of laser beam the image of optical-anisotropic layer is formed in the plane of digital light-sensitive camera. For each type of polarization of the probing beam two coordinate distribution of laser image intensities of the optical-anisotropic layer are measured by use of parallel channels of orthogonal polarization analysis “right circulation” and “left circulation”, with calculation through algorithmic processing the magnitudes of intensities of values of Miller matrix orientation elements, on basis of that the Muller-matrix orientation tomogram is obtained.