Belyi, VNKazak, NSKhilo, NAForbes, ARopot, PI2011-10-212011-10-212011-11Belyi, VN, Kazak, NS, Khilo, NA et al. 2011. Special features of local spatial spectrum of Bessel light beams. Special features of local spatial spectrum of Bessel light beams. Optics Communications, Vol 284(23), pp 5399-54050030-4018http://www.sciencedirect.com/science/article/pii/S0030401811007735http://hdl.handle.net/10204/5252This is the author’s version of a work that was accepted for publication in Optics Communications. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Optics Communications, Vol 284(23), pp 5399-5405In this paper the authors consider the angular spectrum of an apertured Bessel beam when the aperture is circular and shifted laterally with respect to the optical axis. Since the perturbation of the resulting angular spectrum is due to a spatially localized Bessel field, they refer to such an angular spectrum as the local spatial spectrum. They show that the local spatial spectrum of the Bessel beam may differ considerably from the angular spectrum of an unapertured Bessel beam, and find that the ring-shaped angular spectrum is converted into two arcs whose width in the azimuthal direction monotonically decreases as the shift of the circular aperture increases. This phenomenon is predicted theoretically and confirmed experimentally.enBessel beamsSpatial spectrumAnnular apertureCircular apertureAxiconFourier transformationOpticsBessel light beamsArticleBelyi, V., Kazak, N., Khilo, N., Forbes, A., & Ropot, P. (2011). Special features of local spatial spectrum of Bessel light beams. http://hdl.handle.net/10204/5252Belyi, VN, NS Kazak, NA Khilo, A Forbes, and PI Ropot "Special features of local spatial spectrum of Bessel light beams." (2011) http://hdl.handle.net/10204/5252Belyi V, Kazak N, Khilo N, Forbes A, Ropot P. Special features of local spatial spectrum of Bessel light beams. 2011; http://hdl.handle.net/10204/5252.TY - Article AU - Belyi, VN AU - Kazak, NS AU - Khilo, NA AU - Forbes, A AU - Ropot, PI AB - In this paper the authors consider the angular spectrum of an apertured Bessel beam when the aperture is circular and shifted laterally with respect to the optical axis. Since the perturbation of the resulting angular spectrum is due to a spatially localized Bessel field, they refer to such an angular spectrum as the local spatial spectrum. They show that the local spatial spectrum of the Bessel beam may differ considerably from the angular spectrum of an unapertured Bessel beam, and find that the ring-shaped angular spectrum is converted into two arcs whose width in the azimuthal direction monotonically decreases as the shift of the circular aperture increases. This phenomenon is predicted theoretically and confirmed experimentally. DA - 2011-11 DB - ResearchSpace DP - CSIR KW - Bessel beams KW - Spatial spectrum KW - Annular aperture KW - Circular aperture KW - Axicon KW - Fourier transformation KW - Optics KW - Bessel light beams LK - https://researchspace.csir.co.za PY - 2011 SM - 0030-4018 T1 - Special features of local spatial spectrum of Bessel light beams TI - Special features of local spatial spectrum of Bessel light beams UR - http://hdl.handle.net/10204/5252 ER -