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(a) Micrograph of the etched MPPLT. (b) Experimental setup. L1-L4 are convex lenses, y-CL1 and y-CL2 are cylindrical lenses focusing along the y-axis, and x-CL is a cylindrical lens focusing along the x-axis.
(a) Measured single counts (black squares) and coincidence counts (blue dots) versus the transverse position of the slit at the first Talbot length zT = 96.2 mm. (b) Experimental and (c) theoretical two-photon Talbot carpet from (1/2)zT (48.1 mm) to (3/2)zT (144.3 mm).
The red dots are the measured integer two-photon Talbot images detected at distances of (a) zT , (e) (1/2)zT and fractional images at distances of (b) (3/4)zT , (c) (2/3)zT , and (d) (5/8)zT . The blue lines are theoretical curves.
(a) The experimental setup of the detection part for the second scheme. (b) The relationship between two detection distances when Talbot images occur. The blue dots are measured results and the red line is a theoretical curve. The inset shows the measured coincidence counts as detector D1 scans at different distances while D2 is fixed at zT + 10 mm. (c)-(g) The measured coincidence counts versus the transverse position of detector D1 when D2 is fixed at distances of (c) zi = zT − 10 mm, (d) zi = zT − 5 mm, (e) zi = zT , (f) zi = zT + 5 mm, and (g) zi = zT + 10 mm.
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