Generation of long range low-divergent Gauss–Bessel beams by annihilating optical vortices

2021 ◽  
Vol 480 ◽  
pp. 126510
Author(s):  
Lyubomir Stoyanov ◽  
Maya Zhekova ◽  
Aleksander Stefanov ◽  
Boris Ivanov ◽  
Ivan Stefanov ◽  
...  
Keyword(s):  
Long Range ◽  
Optical Vortices ◽  
Bessel Beams

scholarly journals Zeroth- and first-order long range non-diffracting Gauss–Bessel beams generated by annihilating multiple-charged optical vortices

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Lyubomir Stoyanov ◽  
Maya Zhekova ◽  
Aleksander Stefanov ◽  
Ivan Stefanov ◽  
Gerhard G. Paulus ◽  
...  
Keyword(s):  
Long Range ◽  
Spatial Light Modulator ◽  
Width Ratio ◽  
Optical Vortices ◽  
Large Radius ◽  
Light Modulator ◽  
Bessel Beams ◽  
First Order ◽  
Shaped Beam ◽  
Phase Profile

AbstractWe demonstrate an alternative approach for generating zeroth- and first-order long range non-diffracting Gauss–Bessel beams (GBBs). Starting from a Gaussian beam, the key point is the creation of a bright ring-shaped beam with a large radius-to-width ratio, which is subsequently Fourier-transformed by a thin lens. The phase profile required for creating zeroth-order GBBs is flat and helical for first-order GBBs with unit topological charge (TC). Both the ring-shaped beam and the required phase profile can be realized by creating highly charged optical vortices by a spatial light modulator and annihilating them by using a second modulator of the same type. The generated long-range GBBs are proven to have negligible transverse evolution up to 2 m and can be regarded as non-diffracting. The influences of the charge state of the TCs, the propagation distance behind the focusing lens, and the GBB profiles on the relative intensities of the peak/rings are discussed. The method is much more efficient as compared to this using annular slits in the back focal plane of lenses. Moreover, at large propagation distances the quality of the generated GBBs significantly surpasses this of GBBs created by low angle axicons. The developed analytical model reproduces the experimental data. The presented method is flexible, easily realizable by using a spatial light modulator, does not require any special optical elements and, thus, is accessible in many laboratories.

Propagation of Bessel beams carrying optical vortices

2002 ◽  
Vol 209 (1-3) ◽  
pp. 155-165 ◽  
Author(s):  
S. Orlov ◽  
K. Regelskis ◽  
V. Smilgevičius ◽  
A. Stabinis
Keyword(s):  
Optical Vortices ◽  
Bessel Beams

scholarly journals Long-range quasi-non-diffracting Gauss-Bessel beams in a few-cycle laser field

2021 ◽  
Vol 29 (7) ◽  
pp. 10997
Author(s):  
Lyubomir Stoyanov ◽  
Yinyu Zhang ◽  
Alexander Dreischuh ◽  
Gerhard G. Paulus
Keyword(s):  
Long Range ◽  
Laser Field ◽  
Bessel Beams

scholarly journals Reexamination of Bessel beams: A generalized scheme to derive optical vortices

2019 ◽  
Vol 99 (2) ◽  
Author(s):  
G. F. Quinteiro ◽  
C. T. Schmiegelow ◽  
D. E. Reiter ◽  
T. Kuhn
Keyword(s):  
Optical Vortices ◽  
Bessel Beams ◽  
Generalized Scheme

scholarly journals Trapping and acceleration of charged particles in Bessel beams

2006 ◽  
Vol 24 (4) ◽  
pp. 559-566 ◽  
Author(s):  
V. H. MELLADO ◽  
S. HACYAN ◽  
R. JÁUREGUI
Keyword(s):  
Electromagnetic Field ◽  
Transverse Electric ◽  
Bessel Beam ◽  
Charged Particles ◽  
Transverse Magnetic ◽  
Optical Vortices ◽  
Bessel Beams ◽  
Relativistic Charged Particle ◽  
Constants Of Motion ◽  
Dynamical Properties

We study the motion of a classical relativistic charged particle in the electromagnetic field of a Bessel beam exhibiting vector optical vortices, and show how its dynamical properties, such as linear and angular momentum, are transmitted to the particle. The effects of different polarizations are taken into account using transverse electric and magnetic modes, and their superpositions. The constants of motion are identified for the most general case. We report typical numerical results for axial and radial motion for various configurations, with an estimate of expected axial accelerations when transverse magnetic Bessel modes are used. The Lorentz transformation properties of the field are used throughout in order to simplify the calculations.

scholarly journals Multilevel axicon for perfect optical vortex generation

2019 ◽  
Vol 215 ◽  
pp. 02003
Author(s):  
Rebeca Tudor ◽  
Mihai Kusko ◽  
Cristian Kusko ◽  
Andrei Avram
Keyword(s):  
Visible Light ◽  
Optical Element ◽  
Optical Quality ◽  
Optical Vortices ◽  
Vortex Generation ◽  
Optical Fields ◽  
Order Zero ◽  
Bessel Beams ◽  
Optical Elements

We present the fabrication of a beam shaper with 32 levels for the generation of nondiffractive optical fields representing quasi-Bessel beams of order zero. This optical element is designed for visible light (λ=633 nm) and fabricated using standard photolithography and a fine calibrated reactive ion etching process. A large number of levels approximates a continuous conical surface so that the optical quality of the element is very good. It is investigated the possibility of generating perfect optical vortices with this class of optical elements.

Sign in / Sign up

Export Citation Format

Share Document