scholarly journals Astigmatic laser beams with a large orbital angular momentum

2018 ◽  
Vol 26 (1) ◽  
pp. 141 ◽  
Author(s):  
Victor V. Kotlyar ◽  
Alexey A. Kovalev ◽  
Alexey P. Porfirev
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Laser Beams

Microobject manipulations using laser beams with nonzero orbital angular momentum

Laser Physics ◽  
2006 ◽  
Vol 16 (5) ◽  
pp. 842-848 ◽  
Author(s):  
E. G. Abramochkin ◽  
S. P. Kotova ◽  
A. V. Korobtsov ◽  
N. N. Losevsky ◽  
A. M. Mayorova ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Laser Beams

scholarly journals Asymmetric hypergeometric laser beams

2019 ◽  
Vol 43 (5) ◽  
pp. 735-740
Author(s):  
V.V. Kotlyar ◽  
A.A. Kovalev ◽  
E.G. Abramochkin
Keyword(s):  
Exact Solution ◽  
Angular Momentum ◽  
Hypergeometric Function ◽  
Orbital Angular Momentum ◽  
Topological Charge ◽  
Optical Axis ◽  
Type Equation ◽  
Laser Beams ◽  
Propagation Equation ◽  
Degenerate Hypergeometric Function

Here we study asymmetric Kummer beams (aK-beams) with their scalar complex amplitude being proportional to the Kummer function (a degenerate hypergeometric function). These beams are an exact solution of the paraxial propagation equation (Schrödinger-type equation) and obtained from the conventional symmetric hypergeometric beams by a complex shift of the transverse coordinates. On propagation, the aK-beams change their intensity weakly and rotate around the optical axis. These beams are an example of vortex laser beams with a fractional orbital angular momentum (OAM), which depends on four parameters: the vortex topological charge, the shift magnitude, the logarithmic axicon parameter and the degree of the radial factor. Changing these parameters, it is possible to control the beam OAM, either continuously increasing or decreasing it.

Rotation of laser beams with zero of the orbital angular momentum

2007 ◽  
Vol 274 (1) ◽  
pp. 8-14 ◽  
Author(s):  
V.V. Kotlyar ◽  
S.N. Khonina ◽  
R.V. Skidanov ◽  
V.A. Soifer
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Laser Beams

Polarization of orbital angular momentum carrying laser beams

2013 ◽  
Vol 30 (5) ◽  
pp. 821 ◽  
Author(s):  
Jessica Conry ◽  
Reeta Vyas ◽  
Surendra Singh
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Laser Beams

scholarly journals A study on the effects and visibility of low-order aberrations on laser beams with orbital angular momentum

2019 ◽  
Vol 125 (11) ◽  
Author(s):  
Jonas B. Ohland ◽  
Udo Eisenbarth ◽  
Markus Roth ◽  
Vincent Bagnoud
Keyword(s):  
Angular Momentum ◽  
Laser Beam ◽  
Orbital Angular Momentum ◽  
Intensity Distribution ◽  
Laser Beams ◽  
Far Field ◽  
Wavefront Aberrations ◽  
Tolerance Criteria ◽  
Selection Of ◽  
Low Order

Abstract Laguerre–Gaussian-like laser beams have been proposed for driving experiments with high-intensity lasers. They carry orbital angular momentum and exhibit a ring-shaped intensity distribution in the far field which make them particularly attractive for various applications. We show experimentally and numerically that this donut-like shape is extremely sensitive to off-axis wavefront deformations. To support our claim, we generate a Laguerre–Gaussian-like laser beam and apply a selection of common low-order wavefront aberrations. We investigate the visibility of those wavefront deformations in the far field. Under use of established tolerance criteria, we determine the thresholds for the applied aberration and compare the findings with simulations for verification.

Sorting and Quantifying Orbital Angular Momentum of Laser Beams

2013 ◽  
Author(s):  
C. Schulze ◽  
A. Dudley ◽  
D. Flamm ◽  
M. Duparré ◽  
A. Forbes
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Laser Beams

scholarly journals Fluid flow vorticity measurement using laser beams with orbital angular momentum

2016 ◽  
Vol 24 (11) ◽  
pp. 11762 ◽  
Author(s):  
A. Ryabtsev ◽  
S. Pouya ◽  
A. Safaripour ◽  
M. Koochesfahani ◽  
M. Dantus
Keyword(s):  
Angular Momentum ◽  
Fluid Flow ◽  
Orbital Angular Momentum ◽  
Laser Beams ◽  
Flow Vorticity
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