光学斯库利涡旋及其空间演化。
Optical Scully vortex and its spatial evolution.
作者信息
Aksenov Valerii P, Pogutsa Cheslav E
机构信息
V. E. Zuev Institute of Atmospheric Optics, Russian Academy of Sciences, Siberian Branch, Tomsk, Russia.
出版信息
Appl Opt. 2012 Apr 1;51(10):C140-3. doi: 10.1364/AO.51.00C140.
The structure of an optical vortex formed in a partially coherent Laguerre-Gauss laser beam was considered. The main object of study was the recorded vector field of wavefront tilts that consisted of the vortical and potential components. It was found that the vortical motion weakened as the coherence decreased. Main regularities in the behavior of the vortical component can be described by the Scully vortex model of vortical liquid flow. In the spatial evolution, the potential component of tilts may alternate the sign, thus determining the direction of energy flow to the center or to the periphery of the vortex. Energy flow lines in the beam demonstrate the pattern of decay of an optical vortex similar to the pattern of decaying vortical motion in viscous liquid.
研究了在部分相干拉盖尔 - 高斯激光束中形成的光学涡旋的结构。主要研究对象是记录的波前倾斜矢量场，它由涡旋分量和势分量组成。发现随着相干性降低，涡旋运动减弱。涡旋分量行为的主要规律可以用涡旋液体流动的斯卡利涡旋模型来描述。在空间演化中，倾斜的势分量可能会改变符号，从而确定能量流向涡旋中心或周边的方向。光束中的能量流线展示了光学涡旋的衰减模式，类似于粘性液体中衰减的涡旋运动模式。
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