Compensation of nonlinear self-focusing in high-power lasers

摘要

We report on experimental results and the numerical modeling ofnthe compensation of nonlinear self-focusing effects occurring in anhigh-power Nd:glass laser system at intensities above 1nGW/cm2. A GaAs wafer with a negative nonlinear refractivenindex was used for the cancellation of the accumulated phase differencenalong the beam direction in a nonlinear medium (B integral). A numericalnmodel is developed to calculate the behavior of the experimental setup