Abstract
Developing the signal intensity model for random freeze beams, which is an absorption- and diffraction-resistance beam, in the biological turbulent tissue, we investigate the signal intensity evolution of the random freeze beam as the function of the number of the superposition beam, beam waist, the topological charge of vortex modes, the fractal dimension, small length-scale factor, characteristic length of heterogeneity and the constant of refractive-index fluctuation of the tissue. The biological turbulent tissues include frozen human liver sections and the oxygenated (>99%) blood. The results are as follows: the signal transmittance of RF beam is greater than that of the BG beam. The impact of fractal dimension, the constant of refractive-index fluctuation, small length-scale factor and the natural length of heterogeneity on random freeze beam in the oxygenated (>99%) blood is similar to those in frozen human liver sections. The higher the number of superposition sub-beam, the larger the beam waist and the smaller the topological charge can efficiently improve the propagation performance of random freeze beams.
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