Figure 6
From: Planar binary-phase lens for super-oscillatory optical hollow needles
Experimental characterization of the polarization of the optical hollow needle. (a) the color map of the in-plane optical intensity on the XY plane at z = 307λ; (b)–(e) the in-plane optical intensity distributions at z = 307λ when linear polarizer P2 (as shown in Fig. 5) is inserted in the optical path in different orientations of 0 deg, 45 deg, 90 deg, and 135 deg, respectively, where the arrows denote the directions of the polarizer. All optical intensity distributions are given in arbitrary unit.
