Vortex streets in a cavity with higher-order standing waves.
Vortex streets in a cavity with higher-order standing waves.
复制标题
空腔中的涡街具有高阶驻波。
作者：
J. Malos;R. Dykstra;M. Vaupel;C. Weiss
最近，一个激光模拟涡流产生背后的障碍物在流动中被证明。当不同横向结构的倾斜波在激光器中同时激发时，会产生涡旋。我们已经将这种现象推广到高阶驻波。在这里，光学涡旋的典型现象，如单个涡旋的激发和消失以及进入暗线和暗区，以及涡旋对的产生和湮灭变得明显。
Recently a laser analog of vortex generation behind an obstacle in a flow was demonstrated. Vortex generation occurs when tilted waves of different transverse structures are simultaneously excited in a laser. We have generalized this phenomenon to higher-order standing waves. Here typical phenomena expected for optical vortices, such as the excitation and disappearance of single vortices out of and into dark lines and dark areas, as well as vortex-pair creation and annihilation become apparent.