Double helical laser beams based on interfering first-order Bessel beams
Abbreviated Journal Title
J. Opt. Soc. Am. A-Opt. Image Sci. Vis.
DIFFRACTION-FREE BEAMS; NONDIFFRACTING BEAMS; GAUSSIAN BEAMS; OPTICAL; BEAMS; GENERATION; PROPAGATION; ROTATION; AXICON; WAVES; PHASE; Optics
We demonstrate the generation of a nondiffracting double helical beam using axicons and +/- 1 vortex phase plates in a common-path interferometric system. Using linear diffraction theory, a simple analytical expression describing beam propagation is shown to agree with both experiments and Fresnel-diffraction-based simulations. Experiments are performed using continuous laser light in addition to ultrafast pulses, demonstrating that the common-path arrangement and the diffraction theory work equally well for both cases. (C) 2011 Optical Society of America
Journal of the Optical Society of America a-Optics Image Science and Vision
"Double helical laser beams based on interfering first-order Bessel beams" (2011). Faculty Bibliography 2010s. 1078.