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Figure 4
(a) CCD images of the focusing beams at the sample position without the downstream slit, (b) PS-PMT images of the unpolarized non-focusing beam and the focusing beams with ϕs = 14 mm at L2 = 1845 and 3845 mm, and (c) radially averaged intensity distribution obtained from (b). Au = 20 mm was used for all the measurements. |

journal menu![[Figure 4]](ge5176fig4.jpg)
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