Q: What are diffraction gratings? A diffraction grating is an optical component for spectroscopy that splits light into different wavelengths. A typical diffraction grating has thousands of grooves ...

Abstract: The concept of metagratings is a powerful means to control diffracted electromagnetic fields by accurately engineering the near-field. In this letter, a bifunctional metagrating that can ...

Abstract: Refraction represents one of the most fundamental operations that may be performed by a metasurface. However, simple phase-gradient metasurface designs suffer from restricted angular ...

This repository is a reproduction of the code of the paper, "All-optical machine learning using diffractive deep neural networks". The calculation method of wave propagation can be found in the ...