Focusing of a laser beam in turbid media

Kremena S. Petrova

doi:10.1117/12.618417

22 April 2005 Focusing of a laser beam in turbid media

Kremena S. Petrova

Proceedings Volume 5830, 13th International School on Quantum Electronics: Laser Physics and Applications; (2005) https://doi.org/10.1117/12.618417
Event: 13th International School on Quantum Electronics: Laser Physics and Applications, 2004, Bourgas, Bulgaria

Abstract

This work reports on a systematic study of volumetric energy deposition in tissues for irradiation by a converging laser beam in the vicinity of the beam geometric focal point as a function of beam parameters (diameter, light cone angle) and tissue optical properties (scattering and absorption coefficients, anisotropy factor, refractive index). The task is solved by 3-D Monte-Carlo simulation using variance-reduction Monte-Carlo code and delta-scattering technique for the case of homogeneous and two-layered tissue models at typical for the low level laser therapy operating wavelengths. Efficiency of energy delivery is evaluated at increasing depth of teh focal point location under the tissue.

Citation Download Citation

Kremena S. Petrova "Focusing of a laser beam in turbid media", Proc. SPIE 5830, 13th International School on Quantum Electronics: Laser Physics and Applications, (22 April 2005); https://doi.org/10.1117/12.618417

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