Journal ArticleDOI
Generation of an elliptic Bessel beam
Rijuparna Chakraborty,Ajay Ghosh +1 more
TLDR
A technique is reported for the generation of elliptic hollow beams, which are actually scaled versions of higher-order Bessel beams, based on the fact that stretching coordinates in the space domain results in a contraction in the frequency domain, along with a change in the overall amplitude of the spectrum.Abstract:
In an elliptic coordinate system the solution for a diffraction-free beam is given by a Mathieu beam, which is mathematically complicated and therefore takes considerable computational time and a large memory space. A technique is reported for the generation of elliptic hollow beams, which are actually scaled versions of higher-order Bessel beams. The analysis is based on the fact that stretching coordinates in the space domain results in a contraction of the coordinates in the frequency domain, along with a change in the overall amplitude of the spectrum. The beam, produced holographically, is structurally stable and retains its shape up to approximately 1 m.read more
Citations
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Journal ArticleDOI
Diffraction of a finite-radius plane wave and a Gaussian beam by a helical axicon and a spiral phase plate
TL;DR: This work has fabricated by photolithography a binary diffractive optical element able to produce in the focal plane of a spherical lens an optical vortex, which was then used to perform rotation of several polystyrene beads of diameter 5 microm.
Journal ArticleDOI
Rotation of laser beams with zero of the orbital angular momentum
TL;DR: In this paper, it was shown that among the multitude of rotating light beams whose complex amplitude can be represented as a linear superposition of the Laguerre Gaussian (LG) modes with definite numbers there are light beams with zero orbital angular angular momentum (OAM) and vice versa, multi-mode LG beams that show no rotation and are lacking the radially symmetric intensity distribution can possess the non-zero OAM.
Journal ArticleDOI
A highly efficient element for generating elliptic perfect optical vortices
TL;DR: In this paper, a phase-only diffractive optical element is proposed for the efficient generation of elliptic perfect optical vortices (EPOVs), which also have diameters independent of the topological charge.
Journal ArticleDOI
High efficiency generation of tunable ellipse perfect vector beams
Lin Li,Chenliang Chang,Caojin Yuan,Shaotong Feng,Shouping Nie,Zhi-Cheng Ren,Hui-Tian Wang,Jianping Ding +7 more
TL;DR: In this paper, the authors presented a highly efficient method of generating and shaping ellipse perfect vector beams (EPVBs) with a prescribed intensity profile and continuously variant linear polarization state.
Journal ArticleDOI
Generation of hollow beams by spiral rays in multimode light guides
TL;DR: It is shown that hollow beams are generated by light rays that propagate along a spiral path through the light guide, and the properties of the hollow beam depend on the tilt angle and location of the input beam on the front surface of the light guides.
References
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Journal ArticleDOI
Exact solutions for nondiffracting beams. I. The scalar theory
TL;DR: In this paper, exact nonsingular solutions of the scalar-wave equation for beams that are non-diffracting were presented, which means that the intensity pattern in a transverse plane is unaltered by propagating in free space.
Journal ArticleDOI
Holographic generation of diffraction-free beams.
Journal ArticleDOI
Generation of nondiffracting Bessel beams by use of a spatial light modulator
TL;DR: The characteristics of a singularity in a nondiffracting Bessel beam is explored experimentally by use of a programmable spatial light modulator with 64-level phase holograms and the diffraction efficiency is greatly improved.
Journal ArticleDOI
Long, narrow all-light atom guide.
Y. Song,D. Milam,Wendell T. Hill +2 more
TL;DR: A 1-mm-diameter all-light atom guide capable of transporting ultracold atoms tens of centimeters with high efficiency is described and it is shown that it is possible for one to control the direction and speed of the atoms in the tunnel by varying the detuning of the tunnel beam.
Journal ArticleDOI
Experimental demonstration of optical Mathieu beams
Julio C. Gutiérrez-Vega,M. D. Iturbe-Castillo,Gustavo Ramírez,Eduardo Tepichin,Ramón M. Rodríguez-Dagnino,Sabino Chávez-Cerda,G.H.C. New +6 more
TL;DR: The first experimental observation of zero-order Mathieu beams in elliptic cylindrical coordinates was reported in this paper. But this was performed in the case of the wave equation.
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Generation of an elliptic hollow beam using Mathieu and Bessel functions
Rijuparna Chakraborty,Ajay Ghosh +1 more