Open AccessGeneration of arbitrary partially coherent Bessel beam array with a LED for confocal imaging
Author(s) -
Chao Xiao,
Pengcheng Zeng,
Linxin Hu,
Xiangsheng Xie,
Xiangyang Yu
Publication year - 2019
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.27.029510
Subject(s) - optics , bessel beam , bessel function , physics , point spread function , optical tweezers , confocal , light beam , beam (structure) , quantum optics
As the most important class of self-imaging beams, Bessel Beams (BBs) have been extensively studied, and various applications in optical trapping, communication, imaging and quantum studies have been found. In this paper, we propose a new method to generate arbitrary (quasi-) BB arrays by using a single LED light source. The method is simpler, cheaper, and more compatible than other existing methods. The key idea of the proposed method is to form spatially controllable incoherent point sources used to generate BB array imaging. Detailed theoretical deduction, analysis of properties of the generated BB array and comparison with those generated by coherent light sources are depicted. Further application to confocal imaging shows that the BB array is promising for fast, super depth-of-field imaging and multi-particle optical manipulations.