This article is cited in 3 papers

Laser biophotonics

Coherent elastographic tomography via speckle time multiplexing

A. Schwarz^ab, N. Ozana^a, R. Califa^c, A. Shemer^ab, H. Genish^c, Z. Zalevsky<sup>a

a</sup> Faculty of Engineering and the Nanotechnology center, Bar-Ilan University, Ramat Gan, Israel
^b Department of Electrical Engineering, Jerusalem College of Engineering, Israel
^c ContinUse Biometrics Ltd., Israel

Abstract: A method is suggested for separating photons coming from different depths of tissue while externally stimulating tissue via infra-sonic vibration. The process of tomographic information extraction using the speckle time multiplexing approach is presented. Use is also made of a modulated laser combining a speckle-pattern tracking method for sensing surface tilting changes with an interferometer for sensing surface z-axis changes at the same scan time.

Keywords: lasers, distributed-feedback, speckle interferometry, scattering, rough surfaces, Fourier optics and signal processing.

Received: 04.10.2018
Revised: 06.11.2018

 English version: Quantum Electronics, 2019, 49:1, 35–42

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