Structurally Stable Astigmatic Vortex Beams with Super-High Orbital Angular Momentum (ABCD Matrix Approach)
We have demonstrated efficiency of employing the ABCD matrix approach to transform higher-order structured Laguerre–Gaussian (sLG) beams into structurally stable astigmatic sLG (asLG) beams, highlighting their dynamics at propagating. Radical transformations of the beam structure by a cylindrical le...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-09-01
|
| Series: | Photonics |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2304-6732/10/9/1048 |
| _version_ | 1797577810993217536 |
|---|---|
| author | Alexander Volyar Mikhail Bretsko Server Khalilov Yana Akimova |
| author_facet | Alexander Volyar Mikhail Bretsko Server Khalilov Yana Akimova |
| author_sort | Alexander Volyar |
| collection | DOAJ |
| description | We have demonstrated efficiency of employing the ABCD matrix approach to transform higher-order structured Laguerre–Gaussian (sLG) beams into structurally stable astigmatic sLG (asLG) beams, highlighting their dynamics at propagating. Radical transformations of the beam structure by a cylindrical lens form not only orbital angular momentum (OAM) fast oscillations and bursts, but also make the asLG beams structurally unstable in propagation through cylindrical and spherical lenses when focusing paraxially. But, if the spherical lens performs a Fourier transform of the asLG beam after a cylindrical lens, the symmetric beam emerges at the lens focal plane with a sharp OAM dip; then, the OAM restores its former astigmatism, becoming structurally stable at the far diffraction domain. By investigating the beam structure at the focal area, we have showed that the OAM sharp dip is associated with nothing less than the process of dividing the OAM into the vortex and astigmatic constitutes predicted by Anan’ev and Bekshaev. |
| first_indexed | 2024-03-10T22:14:16Z |
| format | Article |
| id | doaj.art-6363110077044c14aa1ad264b474a706 |
| institution | Directory Open Access Journal |
| issn | 2304-6732 |
| language | English |
| last_indexed | 2024-03-10T22:14:16Z |
| publishDate | 2023-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj.art-6363110077044c14aa1ad264b474a7062023-11-19T12:30:21ZengMDPI AGPhotonics2304-67322023-09-01109104810.3390/photonics10091048Structurally Stable Astigmatic Vortex Beams with Super-High Orbital Angular Momentum (ABCD Matrix Approach)Alexander Volyar0Mikhail Bretsko1Server Khalilov2Yana Akimova3Physics and Technology Institute, V.I. Vernadsky Crimean Federal University, Vernadsky Prospect 4, Simferopol 295007, RussiaPhysics and Technology Institute, V.I. Vernadsky Crimean Federal University, Vernadsky Prospect 4, Simferopol 295007, RussiaPhysics and Technology Institute, V.I. Vernadsky Crimean Federal University, Vernadsky Prospect 4, Simferopol 295007, RussiaPhysics and Technology Institute, V.I. Vernadsky Crimean Federal University, Vernadsky Prospect 4, Simferopol 295007, RussiaWe have demonstrated efficiency of employing the ABCD matrix approach to transform higher-order structured Laguerre–Gaussian (sLG) beams into structurally stable astigmatic sLG (asLG) beams, highlighting their dynamics at propagating. Radical transformations of the beam structure by a cylindrical lens form not only orbital angular momentum (OAM) fast oscillations and bursts, but also make the asLG beams structurally unstable in propagation through cylindrical and spherical lenses when focusing paraxially. But, if the spherical lens performs a Fourier transform of the asLG beam after a cylindrical lens, the symmetric beam emerges at the lens focal plane with a sharp OAM dip; then, the OAM restores its former astigmatism, becoming structurally stable at the far diffraction domain. By investigating the beam structure at the focal area, we have showed that the OAM sharp dip is associated with nothing less than the process of dividing the OAM into the vortex and astigmatic constitutes predicted by Anan’ev and Bekshaev.https://www.mdpi.com/2304-6732/10/9/1048vortex beamsABCD matrixstructured lightorbital angular momentum |
| spellingShingle | Alexander Volyar Mikhail Bretsko Server Khalilov Yana Akimova Structurally Stable Astigmatic Vortex Beams with Super-High Orbital Angular Momentum (ABCD Matrix Approach) Photonics vortex beams ABCD matrix structured light orbital angular momentum |
| title | Structurally Stable Astigmatic Vortex Beams with Super-High Orbital Angular Momentum (ABCD Matrix Approach) |
| title_full | Structurally Stable Astigmatic Vortex Beams with Super-High Orbital Angular Momentum (ABCD Matrix Approach) |
| title_fullStr | Structurally Stable Astigmatic Vortex Beams with Super-High Orbital Angular Momentum (ABCD Matrix Approach) |
| title_full_unstemmed | Structurally Stable Astigmatic Vortex Beams with Super-High Orbital Angular Momentum (ABCD Matrix Approach) |
| title_short | Structurally Stable Astigmatic Vortex Beams with Super-High Orbital Angular Momentum (ABCD Matrix Approach) |
| title_sort | structurally stable astigmatic vortex beams with super high orbital angular momentum abcd matrix approach |
| topic | vortex beams ABCD matrix structured light orbital angular momentum |
| url | https://www.mdpi.com/2304-6732/10/9/1048 |
| work_keys_str_mv | AT alexandervolyar structurallystableastigmaticvortexbeamswithsuperhighorbitalangularmomentumabcdmatrixapproach AT mikhailbretsko structurallystableastigmaticvortexbeamswithsuperhighorbitalangularmomentumabcdmatrixapproach AT serverkhalilov structurallystableastigmaticvortexbeamswithsuperhighorbitalangularmomentumabcdmatrixapproach AT yanaakimova structurallystableastigmaticvortexbeamswithsuperhighorbitalangularmomentumabcdmatrixapproach |