Determination of the azimuthal and radial mode indices for light fields possessing orbital angular momentum

2012 ◽  
Author(s):  
M. Mazilu ◽  
A. Mourka ◽  
T. Vettenburg ◽  
E. M. Wright ◽  
K. Dholakia
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Radial Mode ◽  
Light Fields

scholarly journals Simultaneous determination of the constituent azimuthal and radial mode indices for light fields possessing orbital angular momentum

2012 ◽  
Vol 100 (23) ◽  
pp. 231115 ◽  
Author(s):  
Michael Mazilu ◽  
Areti Mourka ◽  
Tom Vettenburg ◽  
Ewan M. Wright ◽  
Kishan Dholakia
Keyword(s):  
Angular Momentum ◽  
Simultaneous Determination ◽  
Orbital Angular Momentum ◽  
Radial Mode ◽  
Light Fields

scholarly journals The Relativistic and the Hidden Momentum of Minkowski and Abraham in Relativistic Energy Wave

2021 ◽  
Author(s):  
Daniel Cardoso
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Mechanical Energy ◽  
Recent Theory ◽  
Translational Energy ◽  
Angle Of Incidence ◽  
Relativistic Energy ◽  
Conservation Of Energy ◽  
Ignition Device

An analysis of the consistency of the Abraham and Minkowski momenta in the determination of the photon trajectory was carried out considering a new principle of conservation of the photon's mechanical energy, in which the photon conserves translational energy in orbital angular momentum when transiting between two media, introducing the relativistic energy wave (REW). The confrontation between REW and the recent theory of space-time waves (ST) was considered, pondering your differences. Throughout this study it was possible to verify that the Abraham momentum appears a relativistic photon ignition device in the transition between two media, acting as the hidden momentum of the Minkowski’s relativistic momentum. The wavy behavior in the matter is relativistic, and the relativistic trajectory appears with delays and advances, with points of synchronization between source-observer. The classical or relativistic trajectories are determined as a function of the angle of incidence and the relative refractive index, by one of two distinct non-additive torques, the classic by Abraham or the relativistic by Minkowski. It was found that the same analysis conducted under the principle of conservation of the mechanical energy of the photon can be treated by an new Doppler, Relativistic Apparent, that can be confused with other Dopplers in the treatment of redshift from distant sources. It was found that the conservation of energy in Orbital Angular Momentum (OAM), in the interaction with matter, explains that the synchronization instants are found in the inversion of the OAM, where the advances and delays of REW occur under negligible variations of the OAM, however, opposites.

scholarly journals SPIN AND ORBITAL ANGULAR MOMENTUM IN THE PROTON

2009 ◽  
Vol 18 (05n06) ◽  
pp. 1116-1134 ◽  
Author(s):  
ANTHONY W. THOMAS
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Current Data ◽  
Proton Spin ◽  
Current Status ◽  
Nucleon Structure ◽  
Upper Limits ◽  
European Muon Collaboration ◽  
Spin Crisis

Since the announcement of the proton spin crisis by the European Muon Collaboration there has been considerable progress in unravelling the distribution of spin and orbital angular momentum within the proton. We review the current status of the problem, showing that not only have strong upper limits have been placed on the amount of polarized glue in the proton but that the experimental determination of the spin content has become much more precise. It is now clear that the origin of the discrepancy between experiment and the naive expectation of the fraction of spin carried by the quarks and anti-quarks in the proton lies in the non-perturbative structure of the proton. We explain how the features expected in a modern, relativistic and chirally symmetric description of nucleon structure naturally explain the current data. The consequences of this explanation for the presence of orbital angular momentum on quarks and gluons is reviewed and comparison made with recent results from lattice QCD and experimental data.

Helical microfibers created by photopolymerization with light fields possessing orbital angular momentum (Conference Presentation)

2018 ◽  
Author(s):  
Yoshihiko Arita ◽  
Junhyung Lee ◽  
Shunsuke Toyoshima ◽  
Katsuhiko Miyamoto ◽  
Paris Panagiotopoulos ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Light Fields
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