Saari Peeter, Bowlan Pamela, Valtna-Lukner Heli, Lõhmus Madis, Piksarv Peeter, Trebino Rick
Institute of Physics, University of Tartu, 142 Riia St, Tartu, 51014, Estonia.
Opt Express. 2010 May 24;18(11):11083-8. doi: 10.1364/OE.18.011083.
Using a recently developed technique (SEA TADPOLE) for easily measuring the complete spatiotemporal electric field of light pulses with micrometer spatial and femtosecond temporal resolution, we directly demonstrate the formation of theo-called boundary diffraction wave and Arago's spot after an aperture, as well as the superluminal propagation of the spot. Our spatiotemporally resolved measurements beautifully confirm the time-domain treatment of diffraction. Also they prove very useful for modern physical optics, especially in micro- and meso-optics, and also significantly aid in the understanding of diffraction phenomena in general.
我们使用一种最近开发的技术（SEA TADPOLE），该技术能够以微米级空间分辨率和飞秒级时间分辨率轻松测量光脉冲的完整时空电场。我们直接证明了孔径后所谓的边界衍射波和阿拉戈光斑的形成，以及光斑的超光速传播。我们的时空分辨测量完美地证实了衍射的时域处理。它们对于现代物理光学也非常有用，尤其是在微光学和介观光学中，并且在总体上对理解衍射现象也有很大帮助。
