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Bessel beam
About: Bessel beam is a research topic. Over the lifetime, 1946 publications have been published within this topic receiving 42264 citations.
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TL;DR: In this paper, in-volume modifications in different thicknesses of borosilicate and soda lime glass using an axicon-generated Gaussian-Bessel beam were investigated.
Abstract: Efficient micromachining of glass with thicknesses of up to several millimeters can be enabled by using picosecond laser pulses with energies in the order of millijoules. In the experiments presented in this article, we investigated in-volume modifications in different thicknesses of borosilicate and soda lime glass using an axicon-generated Gaussian–Bessel beam. The main objective of the study was to demonstrate the separation of 8 mm thick soda lime glass within a single pass of the laser beam.
13 citations
TL;DR: In this article, the authors have studied forward stimulated Rayleigh-wing scattering (SRWS) of picosecond pulses in bulk CS 2 via Bessel beam pump geometry, which provides angular separation of pump and Stokes and strong suppression of self-phase modulation of the pump.
13 citations
TL;DR: In this paper, a subsonic uniformly propagating core was introduced for a sub-sonic plane wave with a subplane wave modulated by a supersonic core, which is considered an envelope for a truncated Bessel beam.
Abstract: We introduce subsonic nondiffracting waves which—unlike the ordinary supersonic nondiffracting waves—evolve periodically under propagation. Such pulse-like waves have a subsonic uniformly propagating ‘core’, which is modulated by a supersonic plane wave. The subsonic core may also be considered an envelope for a truncated Bessel beam and subsonic nondiffracting waves may be used to describe signal propagation within Bessel beams.
13 citations
TL;DR: In this paper, the scattering of a nondiffractive Bessel beam (BB) incident field by a perfect electric conducting circular cylinder is investigated and compared with the standard scattering solution by a plane wave.
Abstract: In this letter, the scattering of a nondiffractive Bessel beam (BB) incident field by a perfect electric conducting circular cylinder is investigated and compared with the standard scattering solution by a plane wave It is proven that the BB incident field improves the validity of standard physical optics approximation and possibly extends its range of applicability to cylinders, or more general scatterers, whose curvature radius is not much larger than the operating wavelength This offers new effective possibilities in the solutions of different electromagnetic scattering problems
13 citations
TL;DR: In this article, a zero-order acoustic Bessel beam is obtained interfering ultrasound waves with a propagating vector lying on a cone and is found to be capable of self-reconstructing beyond large spherical obstacles and multiple scattering layers.
Abstract: In optics, Bessel beams have seen extensive use because they exhibit a non-diffracting propagation and a self-reconstruction capability beyond obstacles encountered along their path, with an ensuing pronounced resilience to scattering. Whether such peculiarities, characteristic of the Helmholtz equation for transverse E and B fields, are manifested by longitudinal acoustic fields is currently unknown. Here, we report the experimental demonstration of the self-healing and the scattering resilience properties of a non-diffracting zero-order acoustic Bessel beam. The beam is obtained interfering ultrasound waves with a propagating vector lying on a cone and is found to be capable of self-reconstructing beyond large spherical obstacles and multiple scattering layers.
13 citations