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arXiv 1202.2698physics.opticsphysics.chem-phphysics.flu-dynquant-ph
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Laser诱导气体涡旋

Laser Induced Gas Vortices

Uri Steinitz, Yehiam Prior, Ilya Sh. Averbukh

摘要:

正确偏振和正确定时的飞秒激光脉冲已经被证明可以产生具有优选旋转方向的旋转状态。我们表明,由于角动量守恒,这些单向旋转分子的碰撞弛豫导致在气体中产生宏观涡流。出现的速度场收敛到一个自相似的泰勒涡,和重复的激光激发引起的气体的连续搅拌。

英文摘要:

Properly polarized and correctly timed femtosecond laser pulses have been demonstrated to create rotational states with a preferred sense of rotation. We show that due to conservation of angular momentum, collisional relaxation of these unidirectionally rotating molecules leads to the generation of macroscopic vortex flows in the gas. The emerging velocity field converges to a self-similar Taylor vortex, and repeated laser excitations cause a continuous stirring of the gas.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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