%0 Journal Article
%A Serna Galán, Julio
%A Martínez, C.
%A Encinas Sanz, Fernando
%A Martínez Herrero, María Rosario
%A Mejías Arias, Pedro Miguel
%T Time-varying beam quality factor and mode evolution in TEA CO_2 laser pulses
%D 1998
%@ 0018-9197
%U https://hdl.handle.net/20.500.14352/58594
%X The time evolution of the transversal modes in a TEA CO_2 laser cavity has been investigated from the analysis of the time-varying beam quality factor M^2 of the emitted pulses. The experiments reveal a significant change in this parameter during the pulse evolution, which can be translated into an evolution of the modes of the laser cavity to reach a nearly stationary behavior. Attention is focused on both the appearance of a particular mode and the duration of its growing process.
%~