Abstract
We analytically and experimentally study the Fraunhofer diffraction of an optical vortex beam possessing noninteger values of the azimuthal index. We show that the Fraunhofer diffraction of this beam presents the birth of a vortex at , where is an integer number and is a small fraction. We discuss this behavior on the basis of the born vortex movement from a position of low intensity to high intensity when is increased of an integer number in fractional steps of .
© 2012 Optical Society of America
Full Article | PDF ArticleMore Like This
A. Mourka, J. Baumgartl, C. Shanor, K. Dholakia, and E. M. Wright
Opt. Express 19(7) 5760-5771 (2011)
Giuseppe Vallone, Anna Sponselli, Vincenzo D’Ambrosio, Lorenzo Marrucci, Fabio Sciarrino, and Paolo Villoresi
Opt. Express 24(15) 16390-16395 (2016)
Jisen Wen, Li-Gang Wang, Xihua Yang, Junxiang Zhang, and Shi-Yao Zhu
Opt. Express 27(4) 5893-5904 (2019)