Application of optical diffraction method in designing phase plates

Lei Ze-Min^{1, 2}, Sun Xiao-Yan^{1, 2}, Lv Feng-Nian¹, Zhang Zhen¹, Lu Xing-Qiang^{1, †,}

Diagram of the optical diffraction method: (a) the focusing process of a lens corresponding to the Fourier transform, (b) the inverse process.