Cavalcante Hugo L D de S, Rios Leite J R
Departamento de Fisica, Universidade Federal de Pernambuco, 50670-901 Recife, Pernambuco, Brazil.
Chaos. 2008 Jun;18(2):023107. doi: 10.1063/1.2904861.
The shape and the peak values of the pulses from a passive Q-switching CO2 laser with SF6 as saturable absorber were detected while the laser was tuned in frequency across a longitudinal mode. A succession of stability windows, typical for bifurcation diagrams in the homoclinic scenario, was observed and the widths of those windows were measured. The expansion rate of the undulations in individual pulses was also obtained and compared to Floquet's multipliers given by the ratio of widths in consecutive windows. The dynamics is consistent with a homoclinic tangency to a periodic orbit.
当一台以SF6作为可饱和吸收体的被动调Q CO2激光器在纵模上进行频率调谐时，检测到了其脉冲的形状和峰值。观察到了一系列对于同宿情形下分岔图来说典型的稳定性窗口，并测量了这些窗口的宽度。还获得了单个脉冲中波动的扩展速率，并将其与由连续窗口宽度之比给出的弗洛凯乘数进行了比较。该动力学与同宿轨道与周期轨道的相切一致。
