Print Email Facebook Twitter Pancharatnam–Berry phase shaping for control of the transverse enhancement of focusing Title Pancharatnam–Berry phase shaping for control of the transverse enhancement of focusing Author Man, Z. (TU Delft ImPhys/Optics; TU Delft ImPhys/Imaging Physics; Shandong University of Science and Technology) Dou, X. (Shenzhen University; Shandong University) Fu, Shenggui (Shandong University) Department ImPhys/Imaging Physics Date 2019 Abstract We show that elongating a tightly focused field in the direction perpendicular to the optical axis is possible. We demonstrate our approach by specially shaping the Pancharatnam–Berry (PB) phase. Moreover, the analytical formulae required to calculate the strength vectors and energy flux of the three-dimensional electromagnetic fields near the focus of an aplanatic optical system are derived using the Richards and Wolf vectorial diffraction methods. Calculations reveal that the transverse enhancement is controllable and depend on the phase index in the PB phase, thereby giving rise to a focus with tunable length and subwavelength width in the focal plane. To reference this document use: http://resolver.tudelft.nl/uuid:ba0dc125-89c4-42de-b7c4-eb33b6863765 DOI https://doi.org/10.1364/OL.44.000427 ISSN 0146-9592 Source Optics Letters, 44 (2), 427-430 Part of collection Institutional Repository Document type journal article Rights © 2019 Z. Man, X. Dou, Shenggui Fu Files PDF ol_44_2_427.pdf 1.69 MB Close viewer /islandora/object/uuid:ba0dc125-89c4-42de-b7c4-eb33b6863765/datastream/OBJ/view