Laser speckle and optical fiber sensors for micromovements monitoring in biotissues

Valery V. Tuchin; Andrey V. Ampilogov; Alexander G. Bogoroditsky; Emmanuil M. Rabinovich; Vladimir P. Ryabukho; Sergey S. Ulyanov; Maksim E. V'yushkin

doi:10.1117/12.44672

1 August 1991 Laser speckle and optical fiber sensors for micromovements monitoring in biotissues

Valery V. Tuchin, Andrey V. Ampilogov, Alexander G. Bogoroditsky, Emmanuil M. Rabinovich, Vladimir P. Ryabukho, Sergey S. Ulyanov, Maksim E. V'yushkin

Author Affiliations +

Proceedings Volume 1429, Holography, Interferometry, and Optical Pattern Recognition in Biomedicine; (1991) https://doi.org/10.1117/12.44672
Event: Optics, Electro-Optics, and Laser Applications in Science and Engineering, 1991, Los Angeles, CA, United States

Abstract

In the paper diffraction of focused laser beam in thin blood-vessels (TBV) is discussed. Theoretical description of this process is given, a number of model experiments are carried out and TBV scattering in biological objects in vivo is analysed. Relations, establishing connection between scattered field and differential characteristics of blood flow in vessels, diameter of which are about or smaller than those of erythrocytes, are obtained. Analysis of theoretical model correctness is carried out. The paper also contains description of two modifications of a sensor for analysis of diff use scattering biological objects vibrations. The modifications are based on modified homodyne Michelson speckle-interferometer and laser self-excited oscillator with fiber-optical delay line.

Citation Download Citation

Valery V. Tuchin, Andrey V. Ampilogov, Alexander G. Bogoroditsky, Emmanuil M. Rabinovich, Vladimir P. Ryabukho, Sergey S. Ulyanov, and Maksim E. V'yushkin "Laser speckle and optical fiber sensors for micromovements monitoring in biotissues", Proc. SPIE 1429, Holography, Interferometry, and Optical Pattern Recognition in Biomedicine, (1 August 1991); https://doi.org/10.1117/12.44672

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