Centrosymmetric Optical Vortex

Abstract

We report on a novel optical vortex, named as centrosymmetric optical vortex (CSOV), which is constructed via four conventional optical vortices (OVs) with different topological charges (TCs). The orbital angular momentum (OAM) density satisfies centrosymmetric distribution. Meanwhile, it is confined within a single ring whose radius is determined by the cone angle of an axicon. Furthermore, its magnitude and distribution are modulated by a parameter determined via the TCs of the four OVs, named as phase reconstruction factor. Our work provides a novel detached asymmetric light field, which possesses the potential application in macro-particle manipulation, especially separating cells.

Generation of composite vortex beams by independent Spatial Light Modulator pixel addressing

“…We do not improve the quality of the beam generated by SLM but interfere two of them to produce a new shape and investigate the general properties of the used method. The other approach is dividing the SLM surface into two or more compact parts (for example into two equal parts or four equal quadrants) [6,[37][38][39]. Considering the result (i.e.…”

A Fourier-invariant squared Laguerre-Gaussian vortex beam

“…При получении (9) использовался справочный интеграл из [2]. Из (8) и (9) видно, что при p = q и m = 0 ПЛГ-пучок переходит в (ЛГ) 2 -пучок.…”

“…Рис. 1 и 2 отличаются только на постоянную и наглядно демонстрируют доказанную в первом параграфе Фурье-инвариантность пучков (ЛГ) 2 . Рябь на рис.…”