Internal energy flows in composite optical vortices

2016 ◽  
Author(s):  
Manuel F. Ferrer-Garcia ◽  
Dorilian Lopez-Mago ◽  
Raul I. Hernandez-Aranda
Keyword(s):  
Internal Energy ◽  
Optical Vortices ◽  
Energy Flows

Study of internal energy flows in dipole vortex beams by knife edge test

2013 ◽  
Vol 293 ◽  
pp. 15-21 ◽  
Author(s):  
Brijesh Kumar Singh ◽  
Monika Bahl ◽  
Dalip Singh Mehta ◽  
Paramasivam Senthilkumaran
Keyword(s):  
Internal Energy ◽  
Knife Edge ◽  
Energy Flows ◽  
Dipole Vortex ◽  
Vortex Beams

Visualization of internal energy flows in optical fields carrying a pair of fractional vortices

2013 ◽  
Vol 60 (13) ◽  
pp. 1027-1036 ◽  
Author(s):  
Brijesh Kumar Singh ◽  
Dalip Singh Mehta ◽  
Paramasivam Senthilkumaran
Keyword(s):  
Internal Energy ◽  
Optical Fields ◽  
Energy Flows ◽  
Fractional Vortices

scholarly journals Minimal Focal Spot Size Measured Based on Intensity and Power Flow

Sensors ◽  
2021 ◽  
Vol 21 (16) ◽  
pp. 5505
Author(s):  
Victor V. Kotlyar ◽  
Sergey S. Stafeev ◽  
Vladislav D. Zaitsev
Keyword(s):  
Linear Polarization ◽  
Energy Flow ◽  
Power Flow ◽  
Focal Spot ◽  
Spot Size ◽  
Optical Vortices ◽  
Focal Spot Size ◽  
Minimum Diameter ◽  
Circular Symmetry ◽  
Energy Flows

It is shown, theoretically and numerically, that the distributions of the longitudinal energy flow for tightly focused light with circular and linear polarization are the same, and that the spot has circular symmetry. It is also shown that the longitudinal energy flows are equal for optical vortices with unit topological charge and with radial or azimuthal polarization. The focal spot has a minimum diameter (all other characteristics being equal), which is measured based on the intensity of an optical vortex with azimuthal polarization. The diameter of the focal spot calculated from the energy flow for light with circular or linear polarization is slightly larger (by a fraction of a percentage). The magnitude of the diameter based on the intensity plays a role in the interaction of light with matter, and the magnitude of the diameter based on the energy flux affects the resolution in optical microscopy which is crucial in sensorial applications.

Internal energy flows of coma-affected singular beams in low-numerical-aperture systems

2015 ◽  
Vol 32 (4) ◽  
pp. 514 ◽  
Author(s):  
Monika Bahl ◽  
Brijesh Kumar Singh ◽  
Rakesh Kumar Singh ◽  
P. Senthilkumaran
Keyword(s):  
Internal Energy ◽  
Numerical Aperture ◽  
Energy Flows

Kinetic energy fix for low internal energy flows

2004 ◽  
Vol 193 (1) ◽  
pp. 243-259 ◽  
Author(s):  
X.Y. Hu ◽  
B.C. Khoo
Keyword(s):  
Kinetic Energy ◽  
Internal Energy ◽  
Energy Flows

scholarly journals Energy flows in tight focus of optical vortices

2021 ◽  
Vol 2103 (1) ◽  
pp. 012162
Author(s):  
S S Stafeev ◽  
V V Kotlyar
Keyword(s):  
Optical Axis ◽  
Numerical Aperture ◽  
Longitudinal Component ◽  
Orbital Energy ◽  
Optical Vortices ◽  
Absolute Value ◽  
Energy Flows ◽  
Tight Focusing ◽  
Left Circular Polarization ◽  
532 Nm

Abstract In this paper we investigated tight focusing of optical vortex with topological charge m = 2 and left circular polarization. The simulation was based on Richards-Wolf equation. Light with wavelength 532 nm was focused by aplanatic lens with numerical aperture NA=0.95. It was shown that the longitudinal component of Poynting vector has negative values on the optical axis. The reason of the energy backflow is due to the fact that the projection of the spin flow onto the optical axis is negative and exceeds in absolute value the projection of the orbital energy flow, which is always positive.

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