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Figure 5
(a) Calculated point spread functions at Δz = 0 and (b) intensity distributions along the optical axis, Δz, at r = 0. The ordinate is a normalized value by the peak intensity of iZP-only. Δres of ZP-A, ZP-B and iZP-only are 110 nm, 109 nm and 102 nm, respectively. DoFs of ZP-A, ZP-B and iZP-only are 461 µm, 412 µm and 231 µm, respectively. |