Title :
Compensation of nonlinear self-focusing in high-power lasers
Author :
Roth, Ulrich ; Loewenthal, F. ; Tommasini, R. ; Balmer, J.E. ; Weber, H.P.
Author_Institution :
Inst. of Appl. Phys., Bern Univ., Switzerland
fDate :
6/1/2000 12:00:00 AM
Abstract :
We report on experimental results and the numerical modeling of the compensation of nonlinear self-focusing effects occurring in a high-power Nd:glass laser system at intensities above 1 GW/cm/sup 2/. A GaAs wafer with a negative nonlinear refractive index was used for the cancellation of the accumulated phase difference along the beam direction in a nonlinear medium (B integral). A numerical model is developed to calculate the behavior of the experimental setup.
Keywords :
compensation; laser beams; neodymium; optical glass; optical self-focusing; solid lasers; B integral; GaAs; GaAs wafer; accumulated phase difference; beam direction; experimental results; experimental setup; high-power Nd:glass laser system; high-power lasers; negative nonlinear refractive index; nonlinear medium; nonlinear self-focusing compensation; nonlinear self-focusing effects; numerical model; numerical modeling; Gallium arsenide; Glass; Laser beams; Laser modes; Neodymium; Numerical models; Optical propagation; Optical refraction; Particle beams; Solid lasers;
Journal_Title :
Quantum Electronics, IEEE Journal of
