Fig. 2. Simulated diffraction patterns in the focal plane. (a) The intensity distribution of the grating with different , and (b) the corresponding curves of the period and slit-width as a function of . Assume the focal length of the lens , where is the Talbot distance, with simulation parameters , . (c) The diffraction images of the grating with different focal lengths , and (d) the corresponding curves of the period and slit-width as a function of the focal length .
Fig. 5. (a) and (b) are the corresponding 1D curves of the centerlines shown in Figure 4. (c) and (d) are the period and slit-width as a function of the distance parameter and the focal length .