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Proceedings Paper

Focusing of hyperbolic-cosine-Gaussian beam with a spiral phase plate
Author(s): Jinsong Li; Songlin Zhuang; Xiumin Gao
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Paper Abstract

The focusing properties of the hyperbolic-cosine-Gaussian beam induced by spiral phase plates are investigated numerically. The phase plate may alter the wavefront phase of the hyperbolic-cosine-Gaussian beam by topological charge which results in spiral optical vortex. Results show that the topological charge of the spiral phase plate influences focal intensity distribution considerably, and some novel focal patterns, focal split appear in focal evolution with different topological charge. The focal evolution differs for different parameters in cosh parts of the hyperbolic-cosine-Gaussian beam. The optical gradient force is also illustrated to show promising application of the hyperbolic-cosine-Gaussian beam containing the spiral optical vortex in optical tweezers array.

Paper Details

Date Published: 3 February 2009
PDF: 8 pages
Proc. SPIE 7160, 2008 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Applications, 716020 (3 February 2009); doi: 10.1117/12.806907
Show Author Affiliations
Jinsong Li, China Jiliang Univ. (China)
Univ. of Shanghai for Science and Technology (China)
Songlin Zhuang, Univ. of Shanghai for Science and Technology (China)
Xiumin Gao, Univ. of Shanghai for Science and Technology (China)
Hangzhou Dianzi Univ. (China)


Published in SPIE Proceedings Vol. 7160:
2008 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Applications

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