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Persistence and Lifelong Fidelity of Phase Singularities in Optical Random Waves
Physical Review Letters ( IF 8.6 ) Pub Date : 2017-11-16 00:00:00 , DOI: 10.1103/physrevlett.119.203903
L. De Angelis , F. Alpeggiani , A. Di Falco , L. Kuipers

Phase singularities are locations where light is twisted like a corkscrew, with positive or negative topological charge depending on the twisting direction. Among the multitude of singularities arising in random wave fields, some can be found at the same location, but only when they exhibit opposite topological charge, which results in their mutual annihilation. New pairs can be created as well. With near-field experiments supported by theory and numerical simulations, we study the persistence and pairing statistics of phase singularities in random optical fields as a function of the excitation wavelength. We demonstrate how such entities can encrypt fundamental properties of the random fields in which they arise.

中文翻译:

光学随机波中相位奇点的持久性和终生保真度

相奇异点是像开瓶器一样扭曲光的位置,根据扭曲方向的不同,带正电荷或负拓扑电荷。在随机波场中产生的众多奇异点中,有一些可以在同一位置找到,但只有当它们表现出相反的拓扑电荷时,这才导致它们相互mutual灭。也可以创建新对。通过理论和数值模拟支持的近场实验,我们研究了随机光场中相位奇点的持久性和配对统计量与激发波长的关系。我们演示了这样的实体如何加密出现它们的随机字段的基本属性。
更新日期:2017-11-17
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