We report a photonic crystal fibre device whose output far field resembles that of an ideal Bessel beam over a wide wavelength range. The Bessel-like beam self-heals when the central peak is obstructed.
© 2012 OSA
Y. Chen, J. M. Stone, W. J. Wadsworth, J. C. Knight, and T. A. Birks, "Bessel-Like Beams Generated by Photonic Crystal Fibre," in Conference on Lasers and Electro-Optics 2012, OSA Technical Digest (Optical Society of America, 2012), paper JTu1K.2.
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