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Simulation of a Test Image in an AR

Metagrating Construction ¨C Discussi

Modeling of Gratings within Optical

Angular-Filtering Volume Gratings fo

Unpolarized Light for Grating Simula

Talbot Images of A Conical Phase Mas

Metagrating Construction ¨C Discussi

Modeling and Design of Blazed Metagr

Design of 2D Non-Paraxial Beam-Split

Stretching or Compression of Ultrash

Thin Element Approximation (TEA) vs. Fourier Modal Method (FMM) for Grating Mode
Time: 2020-03-09 13:39Source: infocrops.comWriter: infocrops
The Thin Element Approximation (TEA) is a widely-used method in e.g. Fourier optics to calculate the diffraction efficiency of gratings. It is however also known that the approximation becomes inaccurate for relatively small grating period. In this example, two types of transmission gratings are selected: sinusoidal and blazed. We use both TEA and FMM (also known as RWCA, which is rigorous) to analyze such gratings with varying period, and by comparing the results, we investigate the behaviors of the two methods.

 
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