The Talbot effect, one of the best-known diffraction effects in relation to gratings, was first observed in 1836 by Henry Fox Talbot. When a periodic structure, e.g. a grating, is illuminated by a plane wave, one can observe the image of the grating at a certain distance (or its multiple) behind the grating. This specific distance is called the Talbot length. Thanks to the automatized free-space propagation technology in VirtualLab Fusion, such effects can be easily and accurately reproduced and analyzed. We demonstrate it with both linear and crossed gratings as examples.
Modeling of the Talbot Effect
We demonstrate the Talbot effect, a well-known near-field diffraction effect from periodic structures such as gratings.
VirtualLab Fusion provides a unified free-space propagation concept in the k domain, together with an automatic selection of appropriate Fourier transform techniques.
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Newsletter/News talbot, gratings, near field, near-field, diffraction, free space, k-domain, k domain, fourier We demonstrate the Talbot effect, which is a well-known near- field diffraction effect from periodic structures such as gratings.
