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Please use this identifier to cite or link to this item: http://hdl.handle.net/10204/3813

Title: Bessel-like beams with z-dependent cone angles
Authors: Belyi, VN
Forbes, A
Kazak, NS
Khilo, NA
Ropot, PI
Keywords: Bessel beam
Axicon
Gaussian beam
Diffraction integral
Spatial spectrum
Issue Date: Aug-2009
Publisher: Society of Photo-Optical Instrumentation Engineers (SPIE)
Citation: Belyi, VN, Forbes, A, Kazak, NS et al. 2009. Bessel-like beams with z-dependent cone angles. Laser Beam Shaping X Conference, San Diego, USA, 3-4 August 2009, pp 12
Abstract: 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 Gaussian beams (keeping the transverse profile at any distances). This new type of beams can be obtained in optical system composed of lens axicon doublet and conical lens. An experimental set-up for producing such beams is realized. It is shown that depending on its parameters the scheme allows one to produce z-dependent Bessel-like beams, whose spatial spectra change from Bessel function to shifted Gaussian one. It is establish theoretically and confirmed experimentally that on-axial intensity of z-dependent Bessel-like beam could be higher than that of incident Gaussian beam.
Description: Copyright 2009. Society of Photo-Optical Instrumentation Engineers. 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
URI: http://hdl.handle.net/10204/3813
ISBN: 9780819477200
ISSN: 0277-786X
Appears in Collections:Laser physics and technology
Laser materials processing
Advanced mathematical modelling and simulation
General science, engineering & technology

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