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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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Journal ArticleDOI
TL;DR: In this article, an experimental femtosecond Bessel beam microprocessing system is built up to investigate the glass internal modification characteristics, such as the width variation and aspect ratios of modification areas, and residual stresses in the irradiated area of glass after modification are also studied using micro Raman spectrum.
Abstract: Taking advantage of the nonlinear laser-material interaction, femtosecond lasers can process transparent materials internally on micro- or nanoscales, whose applications include fabrication of micro-opti- cal waveguides and fluidics, as well as stealth dicing of glass, ceramics, and semiconductor materials. A femtosecond Bessel beam has a long invariant transverse intensity profile up to several millimeters with a width of a few microns. Such characteristics allow the materials process- ing to be completed without moving the beam focusing points as in the case of the Gaussian beam. An experimental femtosecond Bessel beam microprocessing system is built up to investigate the glass internal modification characteristics, such as the width variation and aspect ratios of modification areas. The residual stresses in the irradiated area of glass after modification are also studied using micro Raman spectrum. Finally, an application to thin glass panel cutting is demonstrated by the process of internal modification and breaking. The glass panel is well cut with the chipping on the breaking edge <1 μm. © 2014 Society of Photo-Optical

28 citations

Journal ArticleDOI
TL;DR: A novel concept of a compact optical component aimed at transforming a point-like source into a Bessel beam, called AXIGRIN, consists of an axicon fabricated at the end facet of a gradient index lens that can be directly coupled to an optical fiber, a microscope objective, or vertical-external-cavity surface-emitting-laser to be used without preliminary adjustments.
Abstract: We propose and demonstrate a novel concept of a compact optical component aimed at transforming a point-like source into a Bessel beam. This component, called AXIGRIN, consists of an axicon fabricated at the end facet of a gradient index lens. It can be directly coupled to an optical fiber, a microscope objective, or vertical-external-cavity surface-emitting-laser to be used without preliminary adjustments, which is of practical interest for end users. This opens new avenues in domains, such as imaging, particle acceleration and manipulation, optical coherence tomography, data storage, laser cutting, etc. AXIGRIN also opens the perspective of using Bessel beams for endoscopy. The generation of linearly and radially polarized Bessel beams is demonstrated with a fiber AXIGRIN.

28 citations

Journal ArticleDOI
Alexandre April1
TL;DR: In this paper, the complex-source/sink solution for the non-paraxial Bessel-Gauss (BG) beam is expressed as a superposition of non-parametric elegant Laguerre-Gaussian beams.
Abstract: The study of the nonparaxial propagation of optical beams has received considerable attention. In particular, the so-called complex-source/sink model can be used to describe strongly focused beams near the beam waist, but this method has not yet been applied to the Bessel–Gauss (BG) beam. In this paper, the complex-source/sink solution for the nonparaxial BG beam is expressed as a superposition of nonparaxial elegant Laguerre–Gaussian beams. This provides a direct way to write the explicit expression for a tightly focused BG beam that is an exact solution of the Helmholtz equation. It reduces correctly to the paraxial BG beam, the nonparaxial Gaussian beam, and the Bessel beam in the appropriate limits. The analytical expression can be used to calculate the field of a BG beam near its waist, and it may be useful in investigating the features of BG beams under tight focusing conditions.

28 citations

Journal ArticleDOI
TL;DR: In this article, a conventional resonator configuration, using only spherical curvature optical elements, was investigated for the generation of Bessel-Gauss beams through the deployment of a suitable amplitude filter at a Fourier plane create by careful selection of the geometric cavity parameters.

28 citations

Patent
23 Aug 2012
TL;DR: In this article, a Bessel beam generator with a lens mounted on the emission end of an optical fiber was proposed. But the beam generator was not easy to handle and it required assembly adjustment work.
Abstract: PROBLEM TO BE SOLVED: To provide a Bessel beam generator which facilitates an assembly adjustment work, is compact and is easy to handle.SOLUTION: The Bessel beam generator includes: a light source; an optical fiber for transmitting light emitted from the light source; a lens mounted on the emission end of the optical fiber; a Bessel beam generating element for generating a Bessel beam by the light emitted from the lens; and a ferrule in which the lens is inserted into the incident end thereof and the Bessel beam generating element is inserted into the emission end thereof.

28 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202373
2022149
2021113
2020126
2019134
2018140