Arrangement of Micro Dielectric Particles With Vector Vortex Beam Generated by Dual-Helical Dielectric Cone

• Published in: IEEE journal of selected topics in quantum electronics Vol. 27; no. 5; pp. 1 - 8
• Main Authors: Huang, Zengxin, Kong, Weichao, Kuang, Dengfeng
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.09.2021; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Biomedical optical imaging; Dielectrics; diffractive optical element; Electromagnetic fields; Electron beams; Finite difference time domain method; Fluorescence; Integrated optics; Mathematical analysis; Microparticles; Optical diffraction; Optical manipulation; Optical polarization; Optical propagation; Optical trapping; optical traps; Optical vortices; Spatial light modulators; Vortices
• ISSN: 1077-260X; 1558-4542
• DOI: 10.1109/JSTQE.2021.3052810

Optical vortex is of great value in optical trapping, manipulating, and arranging. Here, we propose a dual-helical dielectric cone to generate a dual-vortex beam which can be used to manipulate and arrange dielectric microparticles in three-dimensional space. With the finite-difference time-domain simulation, we calculate the electromagnetic field intensity distribution, phase, and Poynting vector during the propagation of the dual-vortex beam, the optical force and optical torque on the microparticles in the range of dual-vortex beam is also considered. In the experiment, we use the phase mask projected on spatial light modulator to generate a dual-vortex beam, which can trap, manipulate, and arrange the fluorescent microparticles to a specific and stable shape, which is consistent with the results of our simulation calculations. The dual-vortex beam generated by the dual-helical dielectric cone provides a feasible method three-dimensional optical manipulation, which is significant in biophotonical researches.