Generation of achromatic Bessel beams using a compensated spatial light modulator
Jonathan Leach(University of Glasgow), Graham M. Gibson(University of Glasgow), Miles J. Padgett(University of Glasgow), Elric Esposito(University of Glasgow), Gail McConnell(University of Glasgow), Amanda J. Wright(University of Glasgow), John M. Girkin(University of Glasgow)
Cited by 89Open Access
Abstract
We report the creation of white-light, achromatic Bessel beams using a spatial light modulator and a prism to compensate for the dispersion. Unlike the Bessel beam created by a refractive axicon, this achromatic beam has a radial wavevector and hence an intensity cross-section which is independent of wavelength. The technique also lends itself to the generation of higher order Bessel beams with an on-axis optical vortex and associated orbital angular momentum.
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