Broadband optical vortex beam generation using flat-surface nanostructured gradient index vortex phase masks
Abstract We developed a new kind of compact flat-surface nanostructured gradient index vortex phase mask, for the effective generation of optical vortex beams in broadband infrared wavelength range. A low-cost nanotechnological material method was employed for this work. The binary structure compone...
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| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2023-11-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-023-46871-w |
| _version_ | 1797452880133750784 |
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| author | Hue Thi Nguyen Rafal Kasztelanic Adam Filipkowski Dariusz Pysz Hieu Van Le Ryszard Stepien Takashige Omatsu Wieslaw Krolikowski Ryszard Buczynski |
| author_facet | Hue Thi Nguyen Rafal Kasztelanic Adam Filipkowski Dariusz Pysz Hieu Van Le Ryszard Stepien Takashige Omatsu Wieslaw Krolikowski Ryszard Buczynski |
| author_sort | Hue Thi Nguyen |
| collection | DOAJ |
| description | Abstract We developed a new kind of compact flat-surface nanostructured gradient index vortex phase mask, for the effective generation of optical vortex beams in broadband infrared wavelength range. A low-cost nanotechnological material method was employed for this work. The binary structure component consists of 17,557 nano-sized rods made of two lead–bismuth–gallium silicate glasses which were developed in-house. Those small rods are spatially arranged in such a way that, according to effective medium theory, the refractive index of this internal structure is constant in the radial direction and linearly changes following azimuthal angle. Numerical results demonstrated that a nanostructured vortex phase mask with a thickness of 19 μm can convert Gaussian beams into fundamental optical vortices over 290 nm wavelength bandwidth from 1275 to 1565 nm. This has been confirmed in experiments using three diode laser sources operating at 1310, 1550, and 1565 nm. The generation of vortex beams is verified through their uniform doughnut-like intensity distributions, clear astigmatic transformation patterns, and spiral as well as fork-like interferograms. This new flat-surface component can be directly mounted to an optical fiber tip for simplifying vortex generator systems as well as easier manipulation of the generated OVB in three-dimensional space. |
| first_indexed | 2024-03-09T15:15:04Z |
| format | Article |
| id | doaj.art-d863b0b166b34d508187d3227c24df98 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-03-09T15:15:04Z |
| publishDate | 2023-11-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-d863b0b166b34d508187d3227c24df982023-11-26T13:09:35ZengNature PortfolioScientific Reports2045-23222023-11-0113111110.1038/s41598-023-46871-wBroadband optical vortex beam generation using flat-surface nanostructured gradient index vortex phase masksHue Thi Nguyen0Rafal Kasztelanic1Adam Filipkowski2Dariusz Pysz3Hieu Van Le4Ryszard Stepien5Takashige Omatsu6Wieslaw Krolikowski7Ryszard Buczynski8University of Warsaw, Faculty of PhysicsUniversity of Warsaw, Faculty of PhysicsUniversity of Warsaw, Faculty of PhysicsDepartment of Optical Fiber Technology and Quantum Systems, Łukasiewicz Research Network-Institute of Microelectronics & PhotonicsFaculty of Natural Sciences, Hong Duc UniversityDepartment of Optical Fiber Technology and Quantum Systems, Łukasiewicz Research Network-Institute of Microelectronics & PhotonicsMolecular Chirality Research Center, Chiba UniversityDepartment of Quantum Science and Technologies, Australian National UniversityUniversity of Warsaw, Faculty of PhysicsAbstract We developed a new kind of compact flat-surface nanostructured gradient index vortex phase mask, for the effective generation of optical vortex beams in broadband infrared wavelength range. A low-cost nanotechnological material method was employed for this work. The binary structure component consists of 17,557 nano-sized rods made of two lead–bismuth–gallium silicate glasses which were developed in-house. Those small rods are spatially arranged in such a way that, according to effective medium theory, the refractive index of this internal structure is constant in the radial direction and linearly changes following azimuthal angle. Numerical results demonstrated that a nanostructured vortex phase mask with a thickness of 19 μm can convert Gaussian beams into fundamental optical vortices over 290 nm wavelength bandwidth from 1275 to 1565 nm. This has been confirmed in experiments using three diode laser sources operating at 1310, 1550, and 1565 nm. The generation of vortex beams is verified through their uniform doughnut-like intensity distributions, clear astigmatic transformation patterns, and spiral as well as fork-like interferograms. This new flat-surface component can be directly mounted to an optical fiber tip for simplifying vortex generator systems as well as easier manipulation of the generated OVB in three-dimensional space.https://doi.org/10.1038/s41598-023-46871-w |
| spellingShingle | Hue Thi Nguyen Rafal Kasztelanic Adam Filipkowski Dariusz Pysz Hieu Van Le Ryszard Stepien Takashige Omatsu Wieslaw Krolikowski Ryszard Buczynski Broadband optical vortex beam generation using flat-surface nanostructured gradient index vortex phase masks Scientific Reports |
| title | Broadband optical vortex beam generation using flat-surface nanostructured gradient index vortex phase masks |
| title_full | Broadband optical vortex beam generation using flat-surface nanostructured gradient index vortex phase masks |
| title_fullStr | Broadband optical vortex beam generation using flat-surface nanostructured gradient index vortex phase masks |
| title_full_unstemmed | Broadband optical vortex beam generation using flat-surface nanostructured gradient index vortex phase masks |
| title_short | Broadband optical vortex beam generation using flat-surface nanostructured gradient index vortex phase masks |
| title_sort | broadband optical vortex beam generation using flat surface nanostructured gradient index vortex phase masks |
| url | https://doi.org/10.1038/s41598-023-46871-w |
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