New approach for numerical simulation of the non-steady-state infrared laser beam structure

Lidiya V. Yurchenko

doi:10.1117/12.2298504

30 August 1993 New approach for numerical simulation of the non-steady-state infrared laser beam structure

Lidiya V. Yurchenko

Proceedings Volume 2104, 18th International Conference on Infrared and Millimeter Waves; 210420 (1993) https://doi.org/10.1117/12.2298504
Event: 18th International Conference on Infrared and Millimeter Waves, 1993, Colchester, United Kingdom

Abstract

Theoretical studying of the laser beam spatial structure evolution is a verydifficult problem. The matter is that the complex nonlinear processes of the laserbeam generation, propagation and diffraction take place simultaneously. Therefore,the spatial mode analysis used for empty resonators is too complicated in case ofreal laser systems, especially powerful and non-steady-state ones, since a greatnumber of modes needs to be considered, and the developing processes of the modeinteractions and beam structure transformations should be calculated. The directcomputer simulation of the process by means of exact numerical solution of both thenonlinear wave equations and the level population kinetic equations is also gloomybecause of complexity of the partial differential equations and significantdurability of the whole process when compared to the tine of a single pass of thelight in a resonator. Taking it into account, we have developed a new approachfor self-consistent computer simulation of the nonlinear laser beam spatialstructure evolution which is applicable for a wide range of real laser systemsincluding various infrared lasers, and which is easy to use in practice.

Citation Download Citation

Lidiya V. Yurchenko "New approach for numerical simulation of the non-steady-state infrared laser beam structure", Proc. SPIE 2104, 18th International Conference on Infrared and Millimeter Waves, 210420 (30 August 1993); https://doi.org/10.1117/12.2298504

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