C.F. Phelan, D. P. O'Dwyer, Y. P. Rakovich, J. F. Donegan and J. G. Lunney ‘Conical diffraction and Bessel beam formation with a high optical quality biaxial crystal’ in Optics Express, 17, (15), 2009, pp 12891 - 12898
Optics Express 17 15
The manipulation of a Gaussian laser beam using conical
diffraction in a high optical quality biaxial crystal of KGd(WO4)2 has been
examined in detail with emphasis on the experimental techniques involved
and intuitive explanations of the notable features. Two different optical
arrangements were used to form the Pogendorff double-ring light pattern in
the focal image plane. The formation of both diverging and non-diverging
zeroth and first order Bessel beams was investigated. The various intensity
distributions and polarization properties were measured and compared with
the predictions of well-established theory.
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