Fresnel Lens with Embedded Vortices
Vortices of different charges are embedded in a wavefront that has quadratic phase variation, and the intensity distribution near the focal plane is studied. This method may be useful in realizing complicated beam profiles. We have experimentally demonstrated the generation of vortex arrays having i...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | International Journal of Optics |
| Online Access: | http://dx.doi.org/10.1155/2012/249695 |
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| _version_ | 1850216260912021504 |
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| author | Sunil Vyas Rakesh Kumar Singh Devinder Pal Ghai P. Senthilkumaran |
| author_facet | Sunil Vyas Rakesh Kumar Singh Devinder Pal Ghai P. Senthilkumaran |
| author_sort | Sunil Vyas |
| collection | DOAJ |
| description | Vortices of different charges are embedded in a wavefront that has quadratic phase variation, and the intensity distribution near the focal plane is studied. This method may be useful in realizing complicated beam profiles. We have experimentally demonstrated the generation of vortex arrays having integer as well as fractional topological charges that produce different intensity profiles at the focal plane. The phase variation realized on a spatial light modulator (SLM) acts as a Fresnel lens with embedded vortices. |
| format | Article |
| id | doaj-art-3e5409ad4a574bdbb46c35fd634a0220 |
| institution | OA Journals |
| issn | 1687-9384 1687-9392 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Optics |
| spelling | doaj-art-3e5409ad4a574bdbb46c35fd634a02202025-08-20T02:08:22ZengWileyInternational Journal of Optics1687-93841687-93922012-01-01201210.1155/2012/249695249695Fresnel Lens with Embedded VorticesSunil Vyas0Rakesh Kumar Singh1Devinder Pal Ghai2P. Senthilkumaran3Department of Physics, Indian Institute of Technology Delhi, New Delhi 110016, IndiaDepartment of Physics, Indian Institute of Technology Delhi, New Delhi 110016, IndiaLaser Science and Technology Centre, Metcalfe House, Delhi 110054, IndiaDepartment of Physics, Indian Institute of Technology Delhi, New Delhi 110016, IndiaVortices of different charges are embedded in a wavefront that has quadratic phase variation, and the intensity distribution near the focal plane is studied. This method may be useful in realizing complicated beam profiles. We have experimentally demonstrated the generation of vortex arrays having integer as well as fractional topological charges that produce different intensity profiles at the focal plane. The phase variation realized on a spatial light modulator (SLM) acts as a Fresnel lens with embedded vortices.http://dx.doi.org/10.1155/2012/249695 |
| spellingShingle | Sunil Vyas Rakesh Kumar Singh Devinder Pal Ghai P. Senthilkumaran Fresnel Lens with Embedded Vortices International Journal of Optics |
| title | Fresnel Lens with Embedded Vortices |
| title_full | Fresnel Lens with Embedded Vortices |
| title_fullStr | Fresnel Lens with Embedded Vortices |
| title_full_unstemmed | Fresnel Lens with Embedded Vortices |
| title_short | Fresnel Lens with Embedded Vortices |
| title_sort | fresnel lens with embedded vortices |
| url | http://dx.doi.org/10.1155/2012/249695 |
| work_keys_str_mv | AT sunilvyas fresnellenswithembeddedvortices AT rakeshkumarsingh fresnellenswithembeddedvortices AT devinderpalghai fresnellenswithembeddedvortices AT psenthilkumaran fresnellenswithembeddedvortices |