Phase Singularities to Polarization Singularities
Polarization singularities are superpositions of orbital angular momentum (OAM) states in orthogonal circular polarization basis. The intrinsic OAM of light beams arises due to the helical wavefronts of phase singularities. In phase singularities, circulating phase gradients and, in polarization sin...
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | International Journal of Optics |
| Online Access: | http://dx.doi.org/10.1155/2020/2812803 |
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| _version_ | 1832547805879599104 |
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| author | Ruchi P. Senthilkumaran Sushanta Kumar Pal |
| author_facet | Ruchi P. Senthilkumaran Sushanta Kumar Pal |
| author_sort | Ruchi |
| collection | DOAJ |
| description | Polarization singularities are superpositions of orbital angular momentum (OAM) states in orthogonal circular polarization basis. The intrinsic OAM of light beams arises due to the helical wavefronts of phase singularities. In phase singularities, circulating phase gradients and, in polarization singularities, circulating ϕ12 Stokes phase gradients are present. At the phase and polarization singularities, undefined quantities are the phase and ϕ12 Stokes phase, respectively. Conversion of circulating phase gradient into circulating Stokes phase gradient reveals the connection between phase (scalar) and polarization (vector) singularities. We demonstrate this by theoretically and experimentally generating polarization singularities using phase singularities. Furthermore, the relation between scalar fields and Stokes fields and the singularities in each of them is discussed. This paper is written as a tutorial-cum-review-type article keeping in mind the beginners and researchers in other areas, yet many of the concepts are given novel explanations by adopting different approaches from the available literature on this subject. |
| format | Article |
| id | doaj-art-c2b2b2b798c04f67ba8ff02f9957df44 |
| institution | Kabale University |
| issn | 1687-9384 1687-9392 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Optics |
| spelling | doaj-art-c2b2b2b798c04f67ba8ff02f9957df442025-02-03T06:43:24ZengWileyInternational Journal of Optics1687-93841687-93922020-01-01202010.1155/2020/28128032812803Phase Singularities to Polarization SingularitiesRuchi0P. Senthilkumaran1Sushanta Kumar Pal2Department of Physics, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, IndiaDepartment of Physics, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, IndiaDepartment of Physics, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, IndiaPolarization singularities are superpositions of orbital angular momentum (OAM) states in orthogonal circular polarization basis. The intrinsic OAM of light beams arises due to the helical wavefronts of phase singularities. In phase singularities, circulating phase gradients and, in polarization singularities, circulating ϕ12 Stokes phase gradients are present. At the phase and polarization singularities, undefined quantities are the phase and ϕ12 Stokes phase, respectively. Conversion of circulating phase gradient into circulating Stokes phase gradient reveals the connection between phase (scalar) and polarization (vector) singularities. We demonstrate this by theoretically and experimentally generating polarization singularities using phase singularities. Furthermore, the relation between scalar fields and Stokes fields and the singularities in each of them is discussed. This paper is written as a tutorial-cum-review-type article keeping in mind the beginners and researchers in other areas, yet many of the concepts are given novel explanations by adopting different approaches from the available literature on this subject.http://dx.doi.org/10.1155/2020/2812803 |
| spellingShingle | Ruchi P. Senthilkumaran Sushanta Kumar Pal Phase Singularities to Polarization Singularities International Journal of Optics |
| title | Phase Singularities to Polarization Singularities |
| title_full | Phase Singularities to Polarization Singularities |
| title_fullStr | Phase Singularities to Polarization Singularities |
| title_full_unstemmed | Phase Singularities to Polarization Singularities |
| title_short | Phase Singularities to Polarization Singularities |
| title_sort | phase singularities to polarization singularities |
| url | http://dx.doi.org/10.1155/2020/2812803 |
| work_keys_str_mv | AT ruchi phasesingularitiestopolarizationsingularities AT psenthilkumaran phasesingularitiestopolarizationsingularities AT sushantakumarpal phasesingularitiestopolarizationsingularities |