Dudley, Angela LVasilyeu, RForbes, AKhilo, NRopot, P2009-11-202009-11-202009-07Dudley, A.L., Vasilyeu, R, Forbes, A et al. 2009. Superpositions of higher-order Bessel beams and nondiffracting speckle fields. 54th Annual Conference of the South African Institute of Physics (SAIP), Durban, South Africa, 6-10 July 2009, pp 1http://hdl.handle.net/10204/376054th Annual Conference of the South African Institute of Physics (SAIP), Durban, South Africa, 6-10 July 2009This poster 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 theoreticallyenBessel beamsHigher-order bessel beamsNondiffracting speckle fieldsSpatial light modulatorRing slit apertureComputer generated holograms54th Annual Conference of the South African Institute of PhysicsLaserOpticsPhysicsConference PresentationDudley, A. L., Vasilyeu, R., Forbes, A., Khilo, N., & Ropot, P. (2009). Superpositions of higher-order bessel beams and nondiffracting speckle fields - (SAIP 2009). http://hdl.handle.net/10204/3760Dudley, Angela L, R Vasilyeu, A Forbes, N Khilo, and P Ropot. "Superpositions of higher-order bessel beams and nondiffracting speckle fields - (SAIP 2009)." (2009): http://hdl.handle.net/10204/3760Dudley AL, Vasilyeu R, Forbes A, Khilo N, Ropot P, Superpositions of higher-order bessel beams and nondiffracting speckle fields - (SAIP 2009); 2009. http://hdl.handle.net/10204/3760 .TY - Conference Presentation AU - Dudley, Angela L AU - Vasilyeu, R AU - Forbes, A AU - Khilo, N AU - Ropot, P AB - This poster 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 - 2009-07 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 - 54th Annual Conference of the South African Institute of Physics KW - Laser KW - Optics KW - Physics LK - https://researchspace.csir.co.za PY - 2009 T1 - Superpositions of higher-order bessel beams and nondiffracting speckle fields - (SAIP 2009) TI - Superpositions of higher-order bessel beams and nondiffracting speckle fields - (SAIP 2009) UR - http://hdl.handle.net/10204/3760 ER -