Share Email Print
cover

Proceedings Paper

Hyperbolic-cosine-Gaussian beam focusing with a non-spiral vortex and a spiral vortex
Author(s): Xiumin Gao; Jian Wang; Lingling Sun; Songlin Zhuang
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Singular optics studying optical vortices, or phase singularities, has grown rapidly recently because optical vortices have some interesting properties and promising applications, for instance, to construct highly versatile optical tweezers. In this article, the focusing properties of hyperbolic-cosine-Gaussian beam, which contains a non-spiral optical vortex and a spiral optical vortex, are investigated numerically. The phase plate may be used to construct non-spiral optical vortex by putting phase plate in a half section part of hyperbolic-cosine-Gaussian beam. Results show that the parameters of nonspiral optical vortex and spiral optical vortex influence focal intensity distribution considerably, and some novel focal patterns, such as line focal spot, "H" shape focal spot, and intensity peaks array, may occur. Focal shift and focal split may also appear in focal evolution with tunable parameters of vortices terms. The focal evolution differs for different parameters in cosh parts of hyperbolic-cosine-Gaussian beam.

Paper Details

Date Published: 28 January 2009
PDF: 8 pages
Proc. SPIE 7156, 2008 International Conference on Optical Instruments and Technology: Optical Systems and Optoelectronic Instruments, 71562C (28 January 2009); doi: 10.1117/12.807026
Show Author Affiliations
Xiumin Gao, Hangzhou Dianzi Univ. (China)
Univ. of Shanghai for Science and Technology (China)
Jian Wang, Hangzhou Dianzi Univ. (China)
Lingling Sun, Hangzhou Dianzi Univ. (China)
Songlin Zhuang, Univ. of Shanghai for Science and Technology (China)


Published in SPIE Proceedings Vol. 7156:
2008 International Conference on Optical Instruments and Technology: Optical Systems and Optoelectronic Instruments

© SPIE. Terms of Use
Back to Top