Sharp focusing of beams with V-point polarization singularities
It is theoretically and numerically shown that when tightly focusing an n-th order vector light field that has the central V-point (at which the linear polarization direction is undetermined), the polarization singularity index n, and a "flower"-shaped intensity pattern with 2(n-1) lobes i...
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Samara National Research University
2021-09-01
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| Series: | Компьютерная оптика |
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| Online Access: | http://www.computeroptics.ru/eng/KO/Annot/KO45-5/450501e.html |
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doaj-218029094b294deaad940affd1a8eab72021-10-11T07:07:34ZengSamara National Research UniversityКомпьютерная оптика0134-24522412-61792021-09-0145564365310.18287/2412-6179-CO-884Sharp focusing of beams with V-point polarization singularitiesV.V. Kotlyar 0A.G. Nalimov1S.S. Stafeev2A.A. Kovalev3IPSI RAS – Branch of the FSRC "Crystallography and Photonics" RAS, 443001, Samara, Russia, Molodogvardeyskaya 151; Samara National Research University, 443086, Samara, Russia, Moskovskoye Shosse 34IPSI RAS – Branch of the FSRC "Crystallography and Photonics" RAS, 443001, Samara, Russia, Molodogvardeyskaya 151; Samara National Research University, 443086, Samara, Russia, Moskovskoye Shosse 34IPSI RAS – Branch of the FSRC "Crystallography and Photonics" RAS, 443001, Samara, Russia, Molodogvardeyskaya 151; Samara National Research University, 443086, Samara, Russia, Moskovskoye Shosse 34IPSI RAS – Branch of the FSRC "Crystallography and Photonics" RAS, 443001, Samara, Russia, Molodogvardeyskaya 151; Samara National Research University, 443086, Samara, Russia, Moskovskoye Shosse 34It is theoretically and numerically shown that when tightly focusing an n-th order vector light field that has the central V-point (at which the linear polarization direction is undetermined), the polarization singularity index n, and a "flower"-shaped intensity pattern with 2(n-1) lobes it forms a transverse intensity distribution with 2(n-1) local maxima. At the same time, a vector light field with the polarization singularity index -n, which has the form of a "web" with 2(n+1) cells generates at the sharp focus a transverse intensity distribution with 2(n+1) local maxima. In the focal spot, either 2(n-1) or 2(n+1) V-point polarization singularities with alternating indices +1 or -1 are formed at the intensity zero.http://www.computeroptics.ru/eng/KO/Annot/KO45-5/450501e.htmlvector light beamtopological chargepolarization singularityoptical vortex |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
V.V. Kotlyar A.G. Nalimov S.S. Stafeev A.A. Kovalev |
| spellingShingle |
V.V. Kotlyar A.G. Nalimov S.S. Stafeev A.A. Kovalev Sharp focusing of beams with V-point polarization singularities Компьютерная оптика vector light beam topological charge polarization singularity optical vortex |
| author_facet |
V.V. Kotlyar A.G. Nalimov S.S. Stafeev A.A. Kovalev |
| author_sort |
V.V. Kotlyar |
| title |
Sharp focusing of beams with V-point polarization singularities |
| title_short |
Sharp focusing of beams with V-point polarization singularities |
| title_full |
Sharp focusing of beams with V-point polarization singularities |
| title_fullStr |
Sharp focusing of beams with V-point polarization singularities |
| title_full_unstemmed |
Sharp focusing of beams with V-point polarization singularities |
| title_sort |
sharp focusing of beams with v-point polarization singularities |
| publisher |
Samara National Research University |
| series |
Компьютерная оптика |
| issn |
0134-2452 2412-6179 |
| publishDate |
2021-09-01 |
| description |
It is theoretically and numerically shown that when tightly focusing an n-th order vector light field that has the central V-point (at which the linear polarization direction is undetermined), the polarization singularity index n, and a "flower"-shaped intensity pattern with 2(n-1) lobes it forms a transverse intensity distribution with 2(n-1) local maxima. At the same time, a vector light field with the polarization singularity index -n, which has the form of a "web" with 2(n+1) cells generates at the sharp focus a transverse intensity distribution with 2(n+1) local maxima. In the focal spot, either 2(n-1) or 2(n+1) V-point polarization singularities with alternating indices +1 or -1 are formed at the intensity zero. |
| topic |
vector light beam topological charge polarization singularity optical vortex |
| url |
http://www.computeroptics.ru/eng/KO/Annot/KO45-5/450501e.html |
| work_keys_str_mv |
AT vvkotlyar sharpfocusingofbeamswithvpointpolarizationsingularities AT agnalimov sharpfocusingofbeamswithvpointpolarizationsingularities AT ssstafeev sharpfocusingofbeamswithvpointpolarizationsingularities AT aakovalev sharpfocusingofbeamswithvpointpolarizationsingularities |
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