Abstract

As an intrinsic feature of the optical field, chirality could induce many novel phenomena due to the interaction between chiral light and matter. Thus, the generation of optical fields possessing 2D or 3D chiral intensity patterns, called chiral intensity fields, has been widely studied. However, the control of chiral intensity field along the optical axis is still a challenge. Here, we propose a method to manipulate the axial propagation property of a focused chiral intensity field. Two modulation effects are realized: extended chiral intensity field with a focal depth ${\gt}\;{2}\lambda$ at 90% mode correlation and tunable transformation of chirality during the axial propagation. This method is simple, stable, and easy to perform and therefore offers broad applications especially in optical tweezers and metamaterial fabrication.

© 2020 Optical Society of America

Switchable rotation of metal nanostructures in an intensity chirality-invariant focus field

Yixuan Chen, Jiakang Zhou, Xi Xie, Haixiang Ma, Shuoshuo Zhang, Zhenwei Xie, Changjun Min, Yuquan Zhang, and Xiaocong Yuan
Opt. Lett. 48(23) 6328-6331 (2023)

Tightly focused light field with controllable pure transverse polarization state at the focus

Lei Han, Shuxia Qi, Sheng Liu, Huachao Cheng, Peng Li, and Jianlin Zhao
Opt. Lett. 45(21) 6034-6037 (2020)

Tailoring the gradient and scattering forces for longitudinal sorting of generic-size chiral particles

Hongxia Zheng, Xiao Li, Jack Ng, Huajin Chen, and Zhifang Lin
Opt. Lett. 45(16) 4515-4518 (2020)

Energy flow inversion in an intensity-invariant focusing field

Jiakang Zhou, Haixiang Ma, Yuquan Zhang, Shuoshuo Zhang, Changjun Min, and Xiaocong Yuan
Opt. Lett. 47(6) 1494-1497 (2022)

Controllable double-helical microstructures by photonic orbital angular momentum for chiroptical response

Jincheng Ni, Yanlei Hu, Shunli Liu, Zhaoxin Lao, Shengyun Ji, Deng Pan, Chenchu Zhang, Bing Xu, Jiawen Li, Dong Wu, and Jiaru Chu
Opt. Lett. 46(6) 1401-1404 (2021)