Numerical modeling of short-pulse excimer lasers with negative branch unstable cavities

Two-dimensional simulation of a high-gain, generalized self-filtering, unstable resonator

The performance of a high-power excimer laser, generalized self-filtering, unstable resonator has been modeled by means of a numerical code. The spectral method and the Rigrod equations are basic to the numerical procedure, which is quite general because it results from an appropriate combination of independent propagation algorithms. The code can be applied to arbitrary resonator geometry and can be used to take account of gain medium inhomogeneities and instability phenomena.