The splitting of a single optical vortex into four separate ones in a singular beam is theoretically and experimentally described for the propagation of obliquely incident light in a uniaxial crystal. We also find the condition under which the generated vortices in each of the four individual beams propagate independently without changing their structure and have different locations in all beams for any crystal lengths.
© 2008 Optical Society of America
Original Manuscript: March 13, 2008
Manuscript Accepted: April 22, 2008
Published: June 23, 2008
Tatyana Fadeyeva, Alexander Rubass, Yuriy Egorov, Alexander Volyar, and Grover Swartzlander, Jr., "Quadrefringence of optical vortices in a uniaxial crystal," J. Opt. Soc. Am. A 25, 1634-1641 (2008)