Performance of a 100J cryogenically cooled multi-slab amplifier with respect to the pump beam parameters and geometry

We present advanced 3D ray-tracing code for calculation of amplified spontaneous emission (ASE), stored energy and heat generation in laser active material. New results including spectrally resolved absorption, amplification and super- Gaussian pump beam profile are obtained for 100 J cryogenically cooled multi-slab amplifier.