Abstract

We examined optical trapping force (TF) exerted on non-uniform chiral stratified spheres by a high-order Bessel beam (HOBB). Present theories were proven to be valid by comparison with the existing reference. Numerical simulations considering the effects of various parameters on TF are displayed in detail. The results show that different chirality distributions in stratified chiral sphere will affect significantly the trapping characteristics, and a stable three-dimensional capture can be realized only by selecting the appropriate parameters of incident beam and particles. The theoretical investigations may provide an analytical method to help understand the interaction of light with more complex stratified chiral cells and thus become an encouraging approach to better design an optical manipulation system.

© 2023 Optica Publishing Group

Optical pulling force on a uniaxial anisotropic sphere by a high-order Bessel (vortex) beam

Zheng Jun Li
Appl. Opt. 63(10) A59-A69 (2024)

Analysis of the radiation force and torque exerted on a chiral sphere by a Gaussian beam

Qing-Chao Shang, Zhen-Sen Wu, Tan Qu, Zheng-Jun Li, Lu Bai, and Lei Gong
Opt. Express 21(7) 8677-8688 (2013)

Light scattering of a uniform uniaxial anisotropic sphere by an on-axis high-order Bessel vortex beam

Zheng Jun Li, Xiao Jin Yang, Tan Qu, Hai Ying Li, and Zhen Sen Wu
J. Opt. Soc. Am. A 40(3) 510-520 (2023)

Enhanced optical forces on coupled chiral particles at arbitrary order exceptional points

Chengzhi Zhang, Yuqiong Cheng, and Shubo Wang
Opt. Express 31(18) 28929-28938 (2023)

Calculation of electromagnetic scattering by a large chiral sphere

Zhen-Sen Wu, Qing-Chao Shang, and Zheng-Jun Li
Appl. Opt. 51(27) 6661-6668 (2012)