Evolution of a Bessel beam.Diagram of axicon and resulting Bessel beamCross-section of the Bessel beam and graph of intensityBessel beam re-forming central bright area after obstruction
A Bessel beam is a wave whose amplitude is described by a Bessel function of the first kind.[1][2][3] Electromagnetic, acoustic, gravitational, and matter waves can all be in the form of Bessel beams. A true Bessel beam is non-diffractive. This means that as it propagates, it does not diffract and spread out; this is in contrast to the usual behavior of light (or sound), which spreads out after being focused down to a small spot. Bessel beams are also self-healing, meaning that the beam can be partially obstructed at one point, but will re-form at a point further down the beam axis.
As with a plane wave, a true Bessel beam cannot be created, as it is unbounded and would require an infinite amount of energy. Reasonably good approximations can be made,[4] however, and these are important in many optical applications because they exhibit little or no diffraction over a limited distance. Approximations to Bessel beams are made in practice either by focusing a Gaussian beam with an axicon lens to generate a Bessel–Gauss beam, by using axisymmetric diffraction gratings,[5] or by placing a narrow annular aperture in the far field.[3] High order Bessel beams can be generated by spiral diffraction gratings.[6]
^Garcés-Chávez, V.; McGloin, D.; Melville, H.; Sibbett, W.; Dholakia, K. (2002). "Simultaneous micromanipulation in multiple planes using a self-reconstructing light beam". Nature. 419 (6903): 145–7. Bibcode:2002Natur.419..145G. doi:10.1038/nature01007. PMID 12226659. S2CID 4426776.
^McGloin, D.; Dholakia, K. (2005). "Bessel beams: diffraction in a new light". Contemporary Physics. 46 (1): 15–28. Bibcode:2005ConPh..46...15M. doi:10.1080/0010751042000275259. S2CID 31363603.
A Besselbeam is a wave whose amplitude is described by a Bessel function of the first kind. Electromagnetic, acoustic, gravitational, and matter waves...
wave whose amplitude is described by a Bessel function Blaster beam, a musical instrument Gaussian beam, a beam of electromagnetic radiation whose amplitude...
Bessel may refer to: BesselbeamBessel ellipsoid Bessel function in mathematics Bessel's inequality in mathematics Bessel's correction in statistics....
allows a wide variety of beam patterns to be generated. It can be used to turn a Gaussian beam into a non-diffractive Bessel-like beam. Axicons were first...
solenoid beam's helical wavefronts then drives the trapped objects upstream along the spiral. Both Bessel-beam and solenoidal tractor beams are being...
using the Besselbeam, to address adverse conditions with limited visibility, such as cloudy water, jungle foliage, or around corners. Besselbeams produce...
although this is not true of any physically realizable tophat beam. For a pure Besselbeam, one cannot even compute M2. The definition of "quality" also...
propagation-invariant) beams, such as the Airy beam and Besselbeam, is the ability to control the longitudinal intensity envelope of the beam without significantly...
distribution will become increasingly fuzzy as the beam propagates forward. Besselbeam Laser beam profiler Video of propagation simulation of TopHat...
f(r) as the weighted sum of an infinite number of Bessel functions of the first kind Jν(kr). The Bessel functions in the sum are all of the same order ν...
beams (TEMxy), Laguerre-Gaussian (LG) beams (TEMpl) and Besselbeams. Optical tweezers based on Laguerre-Gaussian beams have the unique capability of trapping...
complex beam geometries, such as Besselbeams and optical vortexes. Near the "waist" (or focal region) of a laser beam, it is highly collimated: the wavefronts...
mentioned previous work in this area by Carl Friedrich Gauss and Friedrich Bessel. In optics, a collimator may consist of a curved mirror or lens with some...
and down. This also allows use of self-reconstructing beams (such as besselbeams or Airy beams) for the illumination which improve the penetration of...
light. The polygonal cells in the green stripes generate self-healing Besselbeams. The species is sometimes incorrectly thought to have been officially...
other." Those would be the Bessel points of a beam 1020 mm long. Other sets of support points, even closer than the Bessel points, which may be wanted...
of the pattern at the Airy disc center, J 1 {\displaystyle J_{1}} is the Bessel function of the first kind of order one, k = 2 π / λ {\displaystyle k={2\pi...
thereby generating respectively spherical wavefronts and nondiffracting Besselbeams. Simulations show that such aberration-free designs are applicable to...
), the solutions are no longer plane waves, but instead are given by Besselbeams, solutions that are a linear combination of Ψ p ρ , p z , ℓ ( ρ , θ ...
South African laser scientist whose research involves beam shaping, optical modes, Besselbeams, and structured light, with applications including optical...
the main beam. In this case, the radiation pattern has a canonical form of where J 1 ( x ) {\displaystyle \displaystyle J_{1}(x)} is the Bessel function...
Global Information
