J. Phys. IV France
Volume 11, Numéro PR2, Juillet 2001
X-Ray Lasers 2000
Page(s) Pr2-79 - Pr2-82
7th International Conference on X-Ray Lasers

J. Phys. IV France 11 (2001) Pr2-79-Pr2-82

DOI: 10.1051/jp4:2001214

Computational modelling of short pulse X-ray laser experiments

R.E. King and G.J. Pert

Department of Physics, University of York, Heslington, York YO10 5DD, U.K.

The basic theory of amplified spontaneous emission (ASE) for long lived lasers was developed several years ago, allowing a clear understanding of the effects of saturation on the output irradiance to be achieved. The development of ultra-short lasers has necessitated the development of the model to include time dependence. Extending a simple ASE model developed earlier, we have investigated in detail the features of time dependent ASE laser action. The model is compared to more detailed computational simulation, and shows good agreement, whilst revealing the limitations of the model. Simulation shows that the beam is broadened transverse to the propagation direction. Good agreement is shown between simulation and experimental values.

© EDP Sciences 2001