时空域的Hanbury Brown和Twiss效应II:时空耦合效应

IF 1.6 Q3 OPTICS OSA Continuum Pub Date : 2021-08-15 DOI:10.1364/osac.434377
Adeel Abbas, Li-Gang Wang
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引用次数: 1

摘要

当任何脉冲光束的电场未能分离成纯粹的空间和时间因素的乘积时,就会出现时空耦合,并最终影响光的传播。在这里,我们首次研究了时空耦合对Hanbury-Brown和Twiss(HBT)效应的影响,借助于我们最近开发的方法[Opt.Express2832077(2020)10.1364/OE.405726],通过假设部分相干时空脉冲源的高斯统计,包含空间域和时间域之间的强度和相关耦合效应。研究了时空耦合HBT效应的广义结果,并通过一个非平凡的二维情况,数值说明了时空耦合对HBT效应影响。它观察到,即使是非常微小的耦合效应也会在更远的距离上强烈改变HBT效应。这项工作将有助于研究光学和其他物理学分支中具有时空耦合的动态源的HBT效应(强度-强度相关性)。
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Hanbury Brown and Twiss effect in the spatiotemporal domain II: the effect of spatiotemporal coupling
Spatiotemporal coupling is present when the electric fields of any pulsed beams fail to separate into a product of purely spatial and temporal factors, and it affects ultimately on the propagation of the light. Here we study the effect of spatiotemporal coupling on the Hanbury Brown and Twiss (HBT) effect for the first time, with the help of our recent developed method [Opt. Express28, 32077 (2020)10.1364/OE.405726], by assuming the Gaussian statistics of partially coherent spatiotemporal pulsed sources containing the intensity and correlation coupling effect between the spatial and temporal domain. The generalized results for the spatiotemporal coupling HBT effect are investigated and through a nontrivial two-dimensional case, we numerically illustrate the influence of the spatiotemporal coupling on the HBT effect. It observes that even a very tiny coupling effect will strongly change the HBT effect at longer distances. This work will be potentially useful for the study of the HBT effect (intensity-intensity correlations) with dynamic sources having spatiotemporal coupling in both optics and other branches of physics.
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OSA Continuum
OSA Continuum OPTICS-
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