Orbital angular momentum of the laser beam and the second order intensity moments

2000 ◽  
Vol 43 (12) ◽  
pp. 1306-1311 ◽  
Author(s):  
Chunqing Gao ◽  
Guanghui Wei ◽  
Horst Weber
Keyword(s):  
Angular Momentum ◽  
Laser Beam ◽  
Orbital Angular Momentum ◽  
Second Order

CALCULATION OF EPR PARAMETERSgFACTORS FORCe3+ION INYBa2Cu3O6+xSUPERCONDUCTOR

2005 ◽  
Vol 19 (01n03) ◽  
pp. 143-146 ◽  
Author(s):  
HUI-NING DONG ◽  
HUI-PING DU ◽  
CHANG-KUI DUAN ◽  
XIAO-BING LUO
Keyword(s):  
Angular Momentum ◽  
Crystal Field ◽  
Orbital Angular Momentum ◽  
Second Order ◽  
Order Perturbation ◽  
Orthorhombic Symmetry ◽  
Superposition Model ◽  
Epr Parameters ◽  
Kramers Doublet ◽  
G Factors

The perturbation formulae of EPR parameters g factors gx, gyand gzfor the lowest Kramers doublet of 4f1ion in orthorhombic symmetry are established. In these formulae, the contributions of the covalency effects, the admixture between J=7/2 and J=5/2 states as well as the second-order perturbation (which is not considered in the previous works) via crystal-field and orbital angular momentum interactions are all included. According to these formulae, and by using the superposition model, the g-factors gx, gyand gzfor Ce3+center in YBa2Cu3O6+ xsuperconductor are calculated. The results are discussed.

scholarly journals VORTEX-FREE LASER BEAM WITH AN ORBITAL ANGULAR MOMENTUM

2017 ◽  
Vol 41 (4) ◽  
pp. 573-576 ◽  
Author(s):  
V. V. Kotlyar ◽  
A. A. Kovalev
Keyword(s):  
Angular Momentum ◽  
Laser Beam ◽  
Orbital Angular Momentum

scholarly journals Plasma solenoid driven by a laser beam carrying an orbital angular momentum

2018 ◽  
Vol 98 (3) ◽  
Author(s):  
R. Nuter ◽  
Ph. Korneev ◽  
I. Thiele ◽  
V. Tikhonchuk
Keyword(s):  
Angular Momentum ◽  
Laser Beam ◽  
Orbital Angular Momentum

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.

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