Time resolved pattern evolution in a large aperture laser
We have measured quasiinstantaneous transverse patterns in a broad aperture laser. Nonordered patterns yielding to boundary determined regular structures in progressive time-integrated recording are observed. The linear analysis and numerical integration of the full Maxwell-Bloch equations allow us to interpret the features of the experiment. We show that this system being far from threshold cannot be fully understood with a perturbative model.
Encinas-Sanz
F
Departamento de Optica, Facultad de CC. Fisicas, Universidad Complutense de Madrid, 28040 Madrid, Spain.
Leyva
I
Guerra
JM