Evolution of phase singularities of Gaussian beams passing through an astigmatic aperture lens

Yongtao Zhang; Chaoliang Ding; Ziguo Zhao; Liuzhan Pan

doi:10.1117/12.899569

19 August 2011 Evolution of phase singularities of Gaussian beams passing through an astigmatic aperture lens

Yongtao Zhang, Chaoliang Ding, Ziguo Zhao, Liuzhan Pan

Proceedings Volume 8192, International Symposium on Photoelectronic Detection and Imaging 2011: Laser Sensing and Imaging; and Biological and Medical Applications of Photonics Sensing and Imaging; 819212 (2011) https://doi.org/10.1117/12.899569
Event: International Symposium on Photoelectronic Detection and Imaging 2011, 2011, Beijing, China

Abstract

The phase singularities of Gaussian beams propagating through an astigmatic aperture lens are studied. Numerical calculation results are given to illustrate how the astigmatism affects the evolution behavior of phase singularities. It is shown that with increasing astigmatic coefficient, the phase singularities shift not only towards the aperture lens, but also towards the z axis. The reorganization process of phase singularities of focused Gaussian beams in the presence of astigmatism with increasing truncation parameter is illustrated by numerical examples.

Citation Download Citation

Yongtao Zhang, Chaoliang Ding, Ziguo Zhao, and Liuzhan Pan "Evolution of phase singularities of Gaussian beams passing through an astigmatic aperture lens", Proc. SPIE 8192, International Symposium on Photoelectronic Detection and Imaging 2011: Laser Sensing and Imaging; and Biological and Medical Applications of Photonics Sensing and Imaging, 819212 (19 August 2011); https://doi.org/10.1117/12.899569

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