Allaria, E. (E.)
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- Pattern dynamics in an annular CO2 laser(2000) Boccaletti, S. (S.); Ramon, M.L. (M. L.); Meucci, R. (R.); Allaria, E. (E.)Competition among modes in an annular CO2 laser has been experimentally and numerically analyzed. During the coexistence of di erent patterns, each of them resulting from the interaction of two transverse modes with opposite angular momentum, chaos has been experimentally detected. A numerical model, derived from the Maxwell-Bloch equations and including symmetry breaking terms, enables the interpretation of the main experimental features.