974281.fig.005a
(a)
974281.fig.005b
(b)
974281.fig.005c
(c)
974281.fig.005d
(d)
Figure 5: Diffraction patterns recorded with the CCD-camera from the axicons with period (a), (b) 4 μm and (c), (d) 8 μm at different distances: (a) 5 μm, (b) 8 μm, (c) 16 μm, and (d) 18 μm.