Abstract
In this work, we demonstrate experimentally the formation of 10 different structures consisting of bright beams with flat phase fronts in the focus of a lens (i.e., in the artificial far field). The basic structure used is a large, stable, square-shaped optical vortex (OV) array composed of vortices with alternating topological charges (TCs). The TCs of one individual OV, of a subarray of OVs, or of the complete OV lattice were erased/doubled in the cases of perfect superposition (on-site alignment) or are manipulated in phase in the cases of an offset between the vortices (off-site alignment). A dramatic reshaping of the beam is observed in the far field and shown to be in excellent agreement with numerical simulations.
© 2018 Optical Society of America
Full Article | PDF ArticleMore Like This
Alexander Dreischuh, Sotir Chervenkov, Dragomir Neshev, Gerhard G. Paulus, and Herbert Walther
J. Opt. Soc. Am. B 19(3) 550-556 (2002)
Alexey A. Kovalev, Victor V. Kotlyar, and Alexey P. Porfirev
J. Opt. Soc. Am. A 37(11) 1740-1747 (2020)
A. G. Nalimov and V. V. Kotlyar
J. Opt. Soc. Am. A 39(5) 812-819 (2022)