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Generation of achromatic bessel beams using a compensated spatial light modulator

Leach, J. and Gibson, G.M. and Padgett, M.J. and Esposito, E. and Wright, A. and Girkin, J.M. and McConnell, G. (2006) Generation of achromatic bessel beams using a compensated spatial light modulator. Optics Express, 14 (12). pp. 5581-5587. ISSN 1094-4087

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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.