高阶矢量Bessel涡旋光的传输和自愈特性研究

打开文本图片集

中图分类号：0436 文献标识码：Adoi：10.37188/OPE.20253308.1169

Abstract： High-order vector Bessel vortex beams，due to their non-difracting，self-healing properties and the simultaneous presence of anisotropic vortex polarization distribution and helical phase on their crosssections，have significant application potential in fields such as information transmisson，imaging，anti-interference，and particle manipulation. This paper，based on the mode extraction principle and optical pen technology，replaced the traditional method of generating high-order vector Bessel vortex beams by modulating two separate beams. It simulated and experimentally verified the generation of high-order vector Bessel vortex beams froma single incident beam，and studied their transmission characteristics and selfhealing properties in free space. Additionaly，taking the topological charge and the vortex order of the vector Bessel vortex beam as O，1，and 2 respectively，the influences of the two on the transmisson and selfhealing properties of the vector Bessel vortex beam were compared and analyzed. Both numerical simulations and optical experiments showed thatduring beam transmission，the order of the vortex beam and the topological charge did not afect the non-difracting state of maintaining the central region's light intensity from diverging；after encountering obstacles that disrupted propagation，beams with smaller topological charges required less time for self-healing. This has important potential significance for application research in optical trapping，optical imaging，optical communication，and other fields.

Key words： high-order vector Bessel vortex beams; non-difraction property; self-healing property

1引言

Bessel光束是一种理想的非衍射光束，具有一定距离内传播光束横向结构不变的无衍射性和部分光束被阻碍，仍能在传播过程中复原的自愈特性[2]。（剩余12371字）