Abstract

We study the three-dimensional (3D) polarization properties of a tightly focused partially coherent vector beam whose initial spatial coherence structure exhibits a lattice distribution. By examining the 3D degree of polarization and the polarimetric dimension of the tightly focused field, we demonstrate that this initial spatial coherence structure induces a 3D isotropically unpolarized beam lattice in the focal plane. Along the longitudinal direction, we observe the formation of nearly 3D unpolarized channels spanning 16 wavelengths in length near the focal region. We demonstrate that the spatial distribution of the 3D unpolarized lattice can be conveniently controlled through engineering the spatial coherence structure of the incident beam.

© 2023 Optica Publishing Group

3D optical trapping by a tightly focused circular airy beam

Habib Moradi, Mahmoud Jabbarpour, Daryoush Abdollahpour, and Faegheh Hajizadeh
Opt. Lett. 47(16) 4115-4118 (2022)

Generation of a higher-order Poincaré sphere beam array with spatial coherence engineering

Yonglei Liu, Zhen Dong, Fei Wang, Yahong Chen, and Yangjian Cai
Opt. Lett. 47(19) 5220-5223 (2022)

Generation of nearly 3D-unpolarized evanescent optical near fields using total internal reflection

Timo Hassinen, Sergei Popov, Ari T. Friberg, and Tero Setälä
Opt. Lett. 41(13) 2942-2945 (2016)

Tunable degree of polarization of an unpolarized, partially coherent beam with circular coherence in a high numerical aperture system

Xinying Zhao, Xiaoyan Pang, and Guobin Wan
Opt. Lett. 44(22) 5574-5577 (2019)

Interferometric measurement of arbitrary propagating vector beams that are tightly focused

Pedro A. Quinto-Su
Opt. Lett. 48(14) 3693-3696 (2023)