A Method for Coupling Monte Carlo Simulations of Photon Transport to Focused Gaussian Beam Propagation

Authors

Patrick Cook, Fort Hays State UniversityFollow
Clifton D. Clark, Fort Hays State UniversityFollow

Classification

Empirical Undergraduate

Abstract

We present a method for modeling focused Gaussian beams in turbid media. Compared to previous methods based on ray tracing, our method is simple and fast. Rather than sampling photon launch positions from the surface of the media, we directly sample launch positions from inside the sample volume using the probability distribution for the position that a ballistic photon will first interact with the tissue. The examples presented illustrate the importance of accounting for Gaussian beam optics when simulating a focused beam. Not doing so will give an artificially large irradiance at the beam waist position. Thermal models used to predict laser damage to tissue will predict temperature rises that are too large for samples containing the beam focus.

Department/Program

Physics

Submission Type

online only poster

DOI

10.58809/TCGN2004

Date

4-22-2020

Rights

Copyright the Author(s)

Comments

For questions contact ScholarsRepository@fhsu.edu

Recommended Citation

Cook, Patrick and Clark, Clifton D. (2020) "A Method for Coupling Monte Carlo Simulations of Photon Transport to Focused Gaussian Beam Propagation," SACAD: John Heinrichs Scholarly and Creative Activity Days: Vol. 2020, Article 16.
DOI: 10.58809/TCGN2004
Available at: https://scholars.fhsu.edu/sacad/vol2020/iss2020/16