arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2004.04875physics.optics
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隐性塔尔博特效应

Veiled Talbot effect

Murat Yessenov, Layton A. Hall, Sergey A. Ponomarenko, Ayman F. Abouraddy

摘要:

具有周期性横向空间分布的自由传播光场经历周期性轴向恢复-一种众所周知的称为塔尔博特效应或自成像的现象。我们在这里表明,引入紧密的时空光谱相关性到一个超快脉冲光场与周期性的横向空间分布消除了所有的轴向动力学在物理空间,同时揭示了一种新的时空塔尔博特效应,可以观察到只有进行时间分辨测量。实际上,观察到“时间衍射”,因此在固定轴平面处的场包络的时间分布对应于共享初始空间分布并且在相同轴平面处观察到的单色场的空间传播分布的片段。时间平均,这是内在的观察强度,完全掩盖了这种效果。

英文摘要:

A freely propagating optical field having a periodic transverse spatial profile undergoes periodic axial revivals - a well-known phenomenon known as the Talbot effect or self-imaging. We show here that introducing tight spatio-temporal spectral correlations into an ultrafast pulsed optical field with a periodic transverse spatial profile eliminates all axial dynamics in physical space while revealing a novel space-time Talbot effect that can be observed only when carrying out time-resolved measurements. Indeed, 'time-diffraction' is observed whereupon the temporal profile of the field envelope at a fixed axial plane corresponds to a segment of the spatial propagation profile of a monochromatic field sharing the initial spatial profile and observed at the same axial plane. Time-averaging, which is intrinsic to observing the intensity, altogether veils this effect.

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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