Experimental study of the focusing properties of a Gaussian Schell-model vortex beam

Fei Wang; Shijun Zhu; Yangjian Cai

doi:10.1364/OL.36.003281

Experimental study of the focusing properties of a Gaussian Schell-model vortex beam

Opt Lett. 2011 Aug 15;36(16):3281-3. doi: 10.1364/OL.36.003281.

Authors

Fei Wang¹, Shijun Zhu, Yangjian Cai

Affiliation

¹ School of Physical Science and Technology, Soochow University, Suzhou 215006, China.

PMID: 21847234
DOI: 10.1364/OL.36.003281

Abstract

We carry out an experimental and theoretical study of the focusing properties of a Gaussian Schell-model (GSM) vortex beam. It is found that we can shape the beam profile of the focused GSM vortex beam by varying its initial spatial coherence width. Focused dark hollow, flat-topped, and Gaussian beam spots can be obtained in our experiment, which will be useful for trapping particles. The experimental results agree well with the theoretical results.