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Browsing by Subject "Bessel beam"

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Bessel-like beams with z-dependent cone angles

Author: Belyi, VN ; Forbes, A ; Kazak, NS ; Khilo, NA ; Ropot, PI Date: Aug 2009 A new type of Bessel-like optical beams, which is distinguished by the dependence on the cone angle from the longitudinal coordinate, is investigated. Such beams have the properties of Bessel beams (ring-spatial spatial spectrum) as well as ... Read more
Experimental generation and application of the superposition of higher-order Bessel beams

Author: Dudley, Angela L ; Vasilyeu, R ; Forbes, A ; Khilo, N ; Ropot, P Date: Jul 2009 This presentation provides information on experimental generation and application of the superposition of higher-order Bessel beams. The superposition of zero order Bessel beams can be used to measure the radius of curvature of a reflecting ... Read more
Generating and analyzing non-diffracting vector vortex beams

Author: Li, Y ; Dudley, Angela L ; Mhlanga, T ; Escutia, MJ ; Forbes, A Date: Aug 2013 We experimentally generate non-diffracting vector vortex beams by using a Spatial Light Modulator (SLM) and an azimuthal birefringent plate (q-plate). The SLM generates scalar Bessel beams and the q-plate converts them to vector vortex beams. ... Read more
Generation and propagation of high-order Bessel vortices in linear and non-linear crystals

Author: Belyi, VN ; Khilo, NA ; Forbes, A ; Ryzhevich, AA Date: Aug 2009 Linear and nonlinear processes of transferring optical singularities from anisotropic crystals onto the wavefront of Bessel light beams (BLBs) are investigated. The generation of high-order vortices at the propagation of BLBs along the optical ... Read more
Higher-order Bessel like beams with z-dependent cone angles

Author: Ismail, Y ; Barnes, G ; Mhlanga, T ; Belyi, V ; Forbes, A Date: Aug 2010 As in the case of zero-order Bessel beam being produced by illuminating an axicon with a Gaussian beam, higher-order Bessel beams are generated by substituting the Gaussian beam with a Laguerre Gaussian (LG) beam. These beams hold similar ... Read more
Intracavity generation of longitudinal dependant Bessel like beams

Author: Litvin, IA ; Khilo, NA ; Forbes, A ; Belyi, VN Date: Aug 2009 In this paper the researchers report on two resonator systems for producing LDBLBs with arbitrary initial parameters. First resonator system is based on doublet of divergence and convergence lenses with spherical aberration. Second resonator ... Read more
Investigation of local spatial spectra of Bessel light beams

Author: Belyi, VN ; Kazak, NS ; Khilo, NA ; Forbes, A ; Ropot, PI Date: Aug 2009 The spectrum of spatial frequencies (SFS) of Bessel beams properties emerging at their spatial localization is investigated. The case, when limiting aperture has a circular shape and a center at any distance from the optical axis, was studied. ... Read more

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Browsing by Subject "Bessel beam"

Browsing by Subject "Bessel beam"

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