title: Atomic phase shifts in mixed-glass, multi-petawatt laser systems.
abstract: The influence of the active gain medium on the spectral amplitude and phase of amplified, femtosecond pulses in a laser system is studied. Results from a case study of a 15-petawatt laser based on Nd-doped mixed glasses show that gain-induced atomic phase shifts will distort the pulses, reducing their peak power. It is also shown that a phase compensation solution is possible and the corresponding coefficients are calculated.
authors: Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94551, USA. filip1@llnl.gov
authors: Catalin V
authors: CV
authors: Filip