Calculation on propagation and amplification of partially coherent light with peaky electric field

Summary form only given. Highly uniform implosions are important to realize the ignition in inertial confinement fusion. A substantial improvement of irradiation uniformity has been performed by replacing coherent laser beams with partially coherent light (PCL). Because the, PCL has speckle structure in the near field it causes small scale self-phase modulation resulting in spectral broadening and self-focusing in the high power operation regime. Therefore, we should, determine an operation level of the PCL to prevent optics from light-induced damage which has been observed recently in disk-type glasses at the end of amplifier chains. These filamentary bulk damages are likely to be due to the self-focusing of the PCL beam of 2 GW/cm/sup 2/ (average intensity) with a 0.6-nm bandwidth. Calculations of PCL propagation have been performed to compare with these experimental results.