We show what is believed to be the first coherent white-light optical vortices generated from supercontinuum that have the azimuthally varying phase structure consistent with a monochromatic Laguerre–Gaussian beam. Two methods of Laguerre–Gaussian supercontinuum generation are discussed and contrasted. We use a computer-generated hologram to convert a Gaussian white-light supercontinuum source into Laguerre–Gaussian supercontinuum.
© 2006 Optical Society of America
Lasers and Laser Optics
Original Manuscript: May 31, 2006
Revised Manuscript: July 7, 2006
Manuscript Accepted: July 11, 2006
Published: August 25, 2006
H. I. Sztul, V. Kartazayev, and R. R. Alfano, "Laguerre-Gaussian supercontinuum," Opt. Lett. 31, 2725-2727 (2006)