Focusing of hyperbolic-cosine-Gaussian beam with a spiral phase plate

Jinsong Li; Songlin Zhuang; Xiumin Gao

doi:10.1117/12.806907

2 February 2009 Focusing of hyperbolic-cosine-Gaussian beam with a spiral phase plate

Jinsong Li, Songlin Zhuang, Xiumin Gao

Proceedings Volume 7160, 2008 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Applications; 716020 (2009) https://doi.org/10.1117/12.806907
Event: International Conference of Optical Instrument and Technology, 2008, Beijing, China

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.

Citation Download Citation

Jinsong Li, Songlin Zhuang, and Xiumin Gao "Focusing of hyperbolic-cosine-Gaussian beam with a spiral phase plate", Proc. SPIE 7160, 2008 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Applications, 716020 (2 February 2009); https://doi.org/10.1117/12.806907

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