Tunable generation of Bessel beams with a fluidic axicon

Graham Milne, Gavin D. M. Jeffries, and Daniel T. Chiu
This paper describes a tunable fluidic conical lens, or axicon, for the generation and dynamic reconfiguration of Bessel beams. When illuminated with a Gaussian laser beam, our fluidic axicon generates a diverging beam with an annular cross section. By varying the refractive index of the solution th ... [Appl. Phys. Lett. 92, 261101 (2008)] published Mon Jun 30, 2008.
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