Finite-Difference Beam Propagation Modeling for Lasers in Ocular Tissues

POSTER

Abstract

A finite-difference solution to the non-paraxial wave equation with non-uniform arbitrary grid spacing is being constructed for the study of focused laser beam propagation in a cylindrical geometry.~ The model will incorporate thermal lensing as well as linear and nonlinear absorption effects to model beam propagation within the human eye. ~The goal of the study is to accurately predict the dynamics of retinal irradiance under conditions of non-linear propagation, with application in the establishment of infrared safe exposure limits. The poster will present a simulation of a Z-scan and comparison to experimental data.

Authors

  • Thornley Jobe

  • Raylon Yow

    AFRL/HEDO, Brooks City Base, San Antonio, Texas 78235-5128, Uni. of Texas at San Antonio, San Antonio, Texas 78249-0697, Texas A\&M University, University of North Texas, Institute for Physical Research, National Academy of Sciences, 378410 Ashtarak, Armenia, Uzbekistan National University, 700174 Tashkent, Uzbekistan, Department of Physics and Astronomy, University of Texas at San Antonio, San Antonio, TX 78249-0697, USA

  • Raylon Yow

    AFRL/HEDO, Brooks City Base, San Antonio, Texas 78235-5128, Uni. of Texas at San Antonio, San Antonio, Texas 78249-0697, Texas A\&M University, University of North Texas, Institute for Physical Research, National Academy of Sciences, 378410 Ashtarak, Armenia, Uzbekistan National University, 700174 Tashkent, Uzbekistan, Department of Physics and Astronomy, University of Texas at San Antonio, San Antonio, TX 78249-0697, USA

  • Raylon Yow

    AFRL/HEDO, Brooks City Base, San Antonio, Texas 78235-5128, Uni. of Texas at San Antonio, San Antonio, Texas 78249-0697, Texas A\&M University, University of North Texas, Institute for Physical Research, National Academy of Sciences, 378410 Ashtarak, Armenia, Uzbekistan National University, 700174 Tashkent, Uzbekistan, Department of Physics and Astronomy, University of Texas at San Antonio, San Antonio, TX 78249-0697, USA