A novel extension of Frantz-Nodvik laser-amplifier model: a computational study

Abstract

The Frantz–Nodvikmodelwas extended to propagatepulse through a doub- le-pass laser amplifier and to study beam-interaction effects on the output-energy flu- ence and gain factor according to the distance between two beams. We also obtained the necessary approximation equations for the saturation state and small input pulse. The results show thatminimum output energy and gain occur when two beams com- pletely coincide. The comparison between numerical, analytical, and empirical results demonstrates a good correspondence.