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, †,}

(a) PM 3: phase distortion of the input beam; (b) PM 4: wavefront distribution of the window.