The Comparison of Laser Radiation Focusing by Diffractive Axicons and Annular Gratings with Variable Height Using High-performance Computer Systems

被引：7

作者：

Savelyev, D. A. ^{[1
,2
]}

机构：

[1] Samara Natl Res Univ, Samara, Russia

[2] RAS, Image Proc Syst Inst, Branch FSRC Crystallog & Photon, Moscow, Russia

来源：

2021 PHOTONICS & ELECTROMAGNETICS RESEARCH SYMPOSIUM (PIERS 2021) | 2021年

基金：

俄罗斯科学基金会;

关键词：

GAUSSIAN BEAMS; BINARY AXICON; FOCAL SPOT; MICROAXICONS; ULTRASHORT; FIELD; POLARIZATION; PROPAGATION; GENERATION; COMPONENT;

D O I：

10.1109/PIERS53385.2021.9694860

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The features of focusing Gaussian beams and optical vortices with circular and radial polarization are studied in this paper. The finite difference time domain method was used to simulate the focusing (3D) of the considered laser beams by diffractive axicons and annular gratings of variable height. It should be noted that a significant increase in the length of the light needle is observed when the height of the grating rings changes in comparison with the standard diffraction axicon. In particular, for the case of inverse ring grating, DOF = 4.8 lambda, which is 2.4 times longer than the length of the light needle obtained using the standard diffractive axicon. The narrowest focal spot was obtained for the direct ring grating case for a super-Gaussian beam with sigma = 12.15 at radial polarization, FWHM = 0.36 lambda, which is 21.7% less than for the standard diffraction axicon.

引用

页码：2709 / 2716

页数：8

共 18 条

[1] The comparison of the optical vortices focusing by silicon diffraction axicons and ring gratings with variable relief heights using high-performance computer systems
Savelyev, D. A.
ST PETERSBURG POLYTECHNIC UNIVERSITY JOURNAL-PHYSICS AND MATHEMATICS, 2022, 15 (03): : 172 - 177
[2] The comparison of the optical vortices focusing by silicon diffraction axicons and ring gratings with variable relief heights using high-performance computer systems
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OPTICAL MANIPULATION AND STRUCTURED MATERIALS CONFERENCE (OMC 2022), 2022, 12479
[3] The investigation of focusing of cylindrically polarized beams with the variable height of optical elements using high-performance computer systems
Savelyev, Dmitry A.
OPTICAL TECHNOLOGIES FOR TELECOMMUNICATIONS 2020, 2021, 11793
[4] The investigation of the cylindrically polarized beams focusing by a diffractive axicon using high-performance computer systems
Savelyev, Dmitry
2020 VI INTERNATIONAL CONFERENCE ON INFORMATION TECHNOLOGY AND NANOTECHNOLOGY (IEEE ITNT-2020), 2020,
[5] The Size Reducing of the Focal Spot with Super-Gauss Pulses Radiation Focusing by a Diffractive Axicon Demonstrated Using High-Performance Computer Systems
Savelyev, Dmitry
Volotovskiy, Sergei
2020 22ND INTERNATIONAL CONFERENCE ON TRANSPARENT OPTICAL NETWORKS (ICTON 2020), 2020,
[6] The calculation of subwavelength diffraction optical elements based on gratings with a variable period using high-performance computer systems
Degtyarev, Sergey A.
Savelyev, Dmitry A.
Fomchenkov, Sergey A.
OPTICAL TECHNOLOGIES FOR TELECOMMUNICATIONS 2019, 2020, 11516
[7] The sub-wavelength complex micro-axicons for focal spot size reducing using high-performance computer systems
Savelyev, Dmitry A.
METAMATERIALS XIII, 2021, 11769
[8] The calculation of the diffraction of the laser beams with a phase singularity on the micro-axicons with using high-performance computing
Savelyev, D. A.
Khonina, S. N.
2ND INTERNATIONAL CONFERENCE ON MATHEMATICAL MODELING IN PHYSICAL SCIENCES 2013 (IC-MSQUARE 2013), 2014, 490
[9] Optimization of the Optical Microelements Using High-Performance Computer Systems
S. N. Khonina
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Radiophysics and Quantum Electronics, 2015, 57 : 650 - 658
[10] OPTIMIZATION OF THE OPTICAL MICROELEMENTS USING HIGH-PERFORMANCE COMPUTER SYSTEMS
Khonina, S. N.
Savelyev, D. A.
RADIOPHYSICS AND QUANTUM ELECTRONICS, 2015, 57 (8-9) : 650 - 658

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