Shaping of Vector Beams Based on Caustic Design

Author:

Liu Shuxi1ORCID,Zeng Zishuai1,Tong Xin1,Xu Pengfei1,Zhao Daomu1ORCID

Affiliation:

1. Zhejiang Key Laboratory of Micro‐nano Quantum Chips and Quantum Control School of Physics Zhejiang University Hangzhou 310058 China

Abstract

AbstractAppropriate wavefront design can endow light fields with many useful properties, such as accelerating, anti‐diffracting, self‐healing, and the capability to exhibit customizable intensity shapes. The strategy of arbitrarily combining these properties to develop novel optical fields mainly relies on caustic methods. However, caustic methods have rarely been applied to the construction of vector fields. Here, slowly changing polarization information is introduced to the caustic rays, aiming to establish direct connections between conventional rays and vector beams in the physical representation. In this manner, a technique is developed to create non‐diffracting vector beams with polarization states that can vary along the caustic curves as needed. It is also demonstrated that the superposition of intersecting ray families can basically determine the polarization states of the other points in the fields. This may provide a new route for designing various novel vector fields and directly promote research in wave and focal field shaping, thereby offering more flexible beam options for applications such as material processing, particle manipulation, and microscopic imaging.

Funder

National Natural Science Foundation of China

Publisher

Wiley

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