The Size Reducing of the Focal Spot with Super-Gauss Pulses Radiation Focusing by a Diffractive Axicon Demonstrated Using High-Performance Computer Systems

2020 ◽  
Author(s):  
Dmitry Savelyev ◽  
Sergei Volotovskiy
Keyword(s):  
High Performance ◽  
Focal Spot ◽  
Computer Systems ◽  
Radiation Focusing ◽  
High Performance Computer ◽  
Diffractive Axicon

scholarly journals The investigation of the features optical vortices focusing by ring gratings with the variable height using high-performance computer systems

2021 ◽  
Vol 2086 (1) ◽  
pp. 012166
Author(s):  
D A Savelyev
Keyword(s):  
High Performance ◽  
Focal Spot ◽  
Fdtd Method ◽  
Spot Size ◽  
Laser Beams ◽  
Optical Vortices ◽  
Focal Spot Size ◽  
Near Zone ◽  
High Performance Computer ◽  
Difference Time

Abstract The diffraction of vortex laser beams with circular polarization by ring gratings with the variable height was investigated in this paper. Modelling of near zone diffraction is numerically investigated by the finite difference time domain (FDTD) method. The changes in the length size of the light needle and focal spot size are shown depending on the type of the ring grating.

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