Fig. 1. Schematic of the scalable Talbot effect in the focal plane of a lens.

Fig. 2. Simulated diffraction patterns in the focal plane. (a) The intensity distribution of the grating with different m, and (b) the corresponding curves of the period and slit-width as a function of m. Assume the focal length of the lens f=zT, where zT=Δ2/λ is the Talbot distance, with simulation parameters λ=0.633μm, Δ=200μm. (c) The diffraction images of the grating with different focal lengths f, and (d) the corresponding curves of the period and slit-width as a function of the focal length f.

Fig. 3. Schematic diagram of the experimental setup.

Fig. 4. Experimental results recorded by the CCD with (a) various distances d0 when the focal length f=75mm and (b) various focal lengths f when the distance d0=2zT.

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 m and the focal length f.

Fig. 6. Experimental results recorded by the CCD with a hexagonal array object with period Δ=70μm and the focal length of the lens is 300 mm. (a) d0=10zT, (b) d0=20zT.