Dudley, Angela LVasilyeu, RForbes, AKhilo, NRopot, PBelyi, VKazak, N2009-11-192009-11-192009-08Dudley, A.L., Vasilyeu, R, Forbes, A et al. 2009. Superpositions of higher-order bessel beams and nondiffracting speckle fields. Laser Beam Shaping X Conference, San Diego, USA, 3-4 August 2009, pp 74300A-1-74300A-7978-1-55752-878-0http://hdl.handle.net/10204/3755Copyright: 2009. Society of Photo-Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.This paper presents a mechanism for the generation of the superposition of higher-order Bessel beams, which implements a ring slit aperture and spatial light modulator (SLM). The experimental technique is also adapted to generate nondiffracting speckle fields. The paper reports on illuminating a ring slit aperture with light which has an azimuthal phase dependence, such that the field produced is a superposition of two higher-order Bessel beams. In the case that the phase dependence of the light illuminating the ring slit aperture is random, a nondiffracting speckle field is produced. The experimentally produced fields are in good agreement with those calculated theoretically.enBessel beamsHigher-order bessel beamsNondiffracting speckle fieldsSpatial light modulatorRing slit apertureComputer generated hologramsLaser beamOpticsConference PresentationDudley, A. L., Vasilyeu, R., Forbes, A., Khilo, N., Ropot, P., Belyi, V., & Kazak, N. (2009). Superpositions of higher-order bessel beams and nondiffracting speckle fields. Society of Photo-Optical Instrumentation Engineers (SPIE). http://hdl.handle.net/10204/3755Dudley, Angela L, R Vasilyeu, A Forbes, N Khilo, P Ropot, V Belyi, and N Kazak. "Superpositions of higher-order bessel beams and nondiffracting speckle fields." (2009): http://hdl.handle.net/10204/3755Dudley AL, Vasilyeu R, Forbes A, Khilo N, Ropot P, Belyi V, et al, Superpositions of higher-order bessel beams and nondiffracting speckle fields; Society of Photo-Optical Instrumentation Engineers (SPIE); 2009. http://hdl.handle.net/10204/3755 .TY - Conference Presentation AU - Dudley, Angela L AU - Vasilyeu, R AU - Forbes, A AU - Khilo, N AU - Ropot, P AU - Belyi, V AU - Kazak, N AB - This paper presents a mechanism for the generation of the superposition of higher-order Bessel beams, which implements a ring slit aperture and spatial light modulator (SLM). The experimental technique is also adapted to generate nondiffracting speckle fields. The paper reports on illuminating a ring slit aperture with light which has an azimuthal phase dependence, such that the field produced is a superposition of two higher-order Bessel beams. In the case that the phase dependence of the light illuminating the ring slit aperture is random, a nondiffracting speckle field is produced. The experimentally produced fields are in good agreement with those calculated theoretically. DA - 2009-08 DB - ResearchSpace DP - CSIR KW - Bessel beams KW - Higher-order bessel beams KW - Nondiffracting speckle fields KW - Spatial light modulator KW - Ring slit aperture KW - Computer generated holograms KW - Laser beam KW - Optics LK - https://researchspace.csir.co.za PY - 2009 SM - 978-1-55752-878-0 T1 - Superpositions of higher-order bessel beams and nondiffracting speckle fields TI - Superpositions of higher-order bessel beams and nondiffracting speckle fields UR - http://hdl.handle.net/10204/3755 ER -