Focal Pattern of Hyperbolic-Cosine-Gaussian Beam with Optical Vortex

Author

Gao, Xiumin ; Zhan, Qiufang ; Li, Jinsong ; Wang, Jian ; Zhuang, Songlin

Author_Institution

Electron. & Inf. Coll., Hangzhou Dianzi Univ., Hangzhou, China

fYear

2009

fDate

17-19 Oct. 2009

Firstpage

1

Lastpage

4

Abstract

Intensity distribution in focal region plays an important role in many optical systems, including optical tweezers, imaging system, and analysis instrument. The focal pattern of the hyperbolic-cosine-Gaussian beam with vortex was investigated theoretically in this article. The vortex includes one non-spiral vortex created by linear phase plate, and one spiral vortex created by spiral phase plate. By adjusting the parameters of the vortex, focal pattern evolves considerably, and some novel focal patterns may come into being, such as focal ring, two-peak pattern, four-peak pattern, which may be used to construct optical traps.

Keywords

Gaussian distribution; optical vortices; radiation pressure; focal pattern; four-peak pattern; hyperbolic-cosine-Gaussian beam; linear phase plate; nonspiral vortex; optical traps; optical tweezers; optical vortex; spiral phase plate; spiral vortex; two-peak pattern; Charge carrier processes; Educational institutions; Holographic optical components; Holography; Laser beams; Optical beams; Optical microscopy; Optical scattering; Optical vortices; Spirals;

fLanguage

English

Publisher

ieee

Conference_Titel

Biomedical Engineering and Informatics, 2009. BMEI '09. 2nd International Conference on

Conference_Location

Tianjin

Print_ISBN

978-1-4244-4132-7

Electronic_ISBN

978-1-4244-4134-1

Type

conf

DOI

10.1109/BMEI.2009.5305823

Filename

5305823