A diffractive refractive optical element used for multimode laser beams is designed to achieve a tiny focused speckle on the predefined outputplane.
设计了一种衍折射光学元件用于多模光束的整形和聚焦。
2
If all pictures are characterized by similar Fourier spectra, which have different scales, the optical fractal pattern can be obtained in the outputplane.
Based on the Kirchhoff scalar diffraction theory, the principle to choose sampling periods in the input plane, outputplane and transformation function was analyzed in detail.