## Experimental and Numerical Analysis of Short-Pulse Laser Interaction with Tissue Phantoms Containing Inhomogeneities

Applied Optics, Vol. 42, Issue 25, pp. 5173-5180 (2003)

http://dx.doi.org/10.1364/AO.42.005173

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### Abstract

The objective is to perform an experimental and numerical study to analyze short-pulse laser propagation through tissue phantoms without and with inhomogeneities embedded in them. For a short-pulse laser the observed optical signal has a distinct temporal shape, and the shape is a function of the medium properties. The scattered temporal transmitted and reflected optical signals are measured experimentally with a streak camera for tissue phantoms irradiated with a short-pulse laser source. A parametric study involving different scattering and absorption coefficients of tissue phantoms and inhomogeneities, as well as the detector positions and orientations, is performed. The temporal and spatial profiles of the scattered optical signals are compared with the numerical modeling results obtained by solving the transient radiative transport equation by using the discrete ordinates technique.

© 2003 Optical Society of America

**OCIS Codes**

(140.0140) Lasers and laser optics : Lasers and laser optics

(170.0170) Medical optics and biotechnology : Medical optics and biotechnology

(170.3660) Medical optics and biotechnology : Light propagation in tissues

(170.6920) Medical optics and biotechnology : Time-resolved imaging

**Citation**

Champak Das, Ashish Trivedi, Kunal Mitra, and Tuan Vo-Dinh, "Experimental and Numerical Analysis of Short-Pulse Laser Interaction with Tissue Phantoms Containing Inhomogeneities," Appl. Opt. **42**, 5173-5180 (2003)

http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-42-25-5173

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