Numerical study of the properties of optical vortex array laser tweezers

Chun Fu Kuo, Shu Chun Chu

研究成果: Article同行評審

36 引文 斯高帕斯(Scopus)

摘要

Chu et al. constructed a kind of Ince-Gaussian modes (IGM)-based vortex array laser beams consisting of p x p embedded optical vortexes from Ince-Gaussian modes, IGp,pe modes [Opt. Express 16, 19934 (2008)]. Such an IGM-based vortex array laser beams maintains its vortex array profile during both propagation and focusing, and is applicable to optical tweezers. This study uses the discrete dipole approximation (DDA) method to study the properties of the IGM-based vortex array laser tweezers while it traps dielectric particles. This study calculates the resultant force exerted on the spherical dielectric particles of different sizes situated at the IGM-based vortex array laser beam waist. Numerical results show that the number of trapping spots of a structure light (i.e. IGM-based vortex laser beam), is depended on the relation between the trapped particle size and the structure light beam size. While the trapped particle is small comparing to the beam size of the IGM-based vortex array laser beams, the IGM-based vortex array laser beams tweezers are suitable for multiple traps. Conversely, the tweezers is suitable for single traps. The results of this study is useful to the future development of the vortex array laser tweezers applications.

原文English
頁(從 - 到)26418-26431
頁數14
期刊Optics Express
21
發行號22
DOIs
出版狀態Published - 2013 11月 4

All Science Journal Classification (ASJC) codes

  • 原子與分子物理與光學

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