Abstract

With dual two-dimensional Airy-like waveforms, we demonstrate the creation of highly confined electromagnetic fields in the transverse plane and circular or elliptical propagation trajectories in the longitudinal plane by using specially designed Pancharatnam–Berry (PB) phases. Applying the Richards and Wolf vectorial diffraction methods, the explicit expressions are obtained to calculate the strength vectors and energy flux of the three-dimensional electromagnetic fields. Calculations reveal that the nano-interferometric structures of such highly confined fields highly depend on the indexes ${\gamma _1}$ and ${\gamma _2}$ determining the PB phase, thereby enabling the engineering of highly confined fields with tunable size, spacing, and propagation trajectories.

© 2019 Optical Society of America

Pancharatnam–Berry phase shaping for control of the transverse enhancement of focusing

Zhongsheng Man, Xiujie Dou, and Shenggui Fu
Opt. Lett. 44(2) 427-430 (2019)

Creation of an ultralong non-diffracting magnetization light beam with multiple energy oscillations using the inverse Faraday effect

Xiaoyu Weng, Wei Yan, Zhigang Yang, and Junle Qu
Opt. Lett. 44(22) 5537-5540 (2019)

Improve depth of field of optical coherence tomography using finite energy Airy beam

Miao Zhang, Zhijun Ren, and Ping Yu
Opt. Lett. 44(12) 3158-3161 (2019)

Energy density and energy flux in the focus of an optical vortex: reverse flux of light energy

Victor V. Kotlyar, Alexey A. Kovalev, and Anton G. Nalimov
Opt. Lett. 43(12) 2921-2924 (2018)

Complex degree of coherence and fringe visibility in spatial unitary transformations of scalar fields

Atri Halder and Ari T. Friberg
Opt. Lett. 45(1) 192-195 (2020)