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Browsing by Author "Khilo, NA"

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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
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
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
Intra–cavity generation of Bessel–like beams with longitudinally dependent cone angles

Author: Litvin, IA ; Khilo, NA ; Forbes, A ; Belyi, VN Date: Feb 2010 The authors report on two resonator systems for producing Bessel–like beams with longitudinally dependent cone angles (LDBLBs). Such beams have extended propagation distances as compared to conventional Bessel– Gauss beams, with a far field ... 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
Propagation of high-order circularly polarized Bessel beams and vortex generation in uniaxial crystals

Author: Belyi, VN ; Khilo, NA ; Kazak, NS ; Ryzhevich, AA ; Forbes, A Date: May 2011 The authors investigate the generation and transformation of Bessel beams through linear and nonlinear optical crystals. They outline the generation of high-order vortices due to propagation of Bessel beams along the optical axis of uniaxial ... Read more
Special features of local spatial spectrum of Bessel light beams

Author: Belyi, VN ; Kazak, NS ; Khilo, NA ; Forbes, A ; Ropot, PI Date: Nov 2011 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 ... Read more

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Browsing by Author "Khilo, NA"

Browsing by Author "Khilo, NA"

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