High-Capacity Near-Infrared Optical Vortex Sorting and Detection by Nonlinear Dammann Vortex Grating
This paper demonstrates the sorting and detection of near-infrared vortex light using a nonlinear Dammann vortex grating. By incorporating a forked structure into the nonlinear Dammann grating, the resulting nonlinear Dammann vortex grating is capable of converting near-infrared Gaussian light into...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-05-01
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| Series: | Photonics |
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| Online Access: | https://www.mdpi.com/2304-6732/12/6/532 |
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| author | Hui Zhao Ruwei Zhao Qilu Liu Yan Sheng Tianxiang Xu |
| author_facet | Hui Zhao Ruwei Zhao Qilu Liu Yan Sheng Tianxiang Xu |
| author_sort | Hui Zhao |
| collection | DOAJ |
| description | This paper demonstrates the sorting and detection of near-infrared vortex light using a nonlinear Dammann vortex grating. By incorporating a forked structure into the nonlinear Dammann grating, the resulting nonlinear Dammann vortex grating is capable of converting near-infrared Gaussian light into a visible vortex array. The array comprises 49 independent detection channels, each of which can precisely control the inherent topological charge values. When the topological charge value of a detection channel’s vortex light matches that of the incident vortex, the vortex degenerates into a Gaussian spot, thereby enabling the detection of the incident vortex’s topological charge. Our experimental results show that this grating, with its 49 independent detection channels, can detect the topological charge values of vortex light in the near-infrared range from l = −12 to +12 in real-time. Compared to existing solutions, this grating offers enhanced versatility and has potential applications in optical communication systems for the transmission, reception, and multiplexing of OV beams. |
| format | Article |
| id | doaj-art-68ece4bdc4b84d85b5b3932f58e24451 |
| institution | DOAJ |
| issn | 2304-6732 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj-art-68ece4bdc4b84d85b5b3932f58e244512025-08-20T03:16:35ZengMDPI AGPhotonics2304-67322025-05-0112653210.3390/photonics12060532High-Capacity Near-Infrared Optical Vortex Sorting and Detection by Nonlinear Dammann Vortex GratingHui Zhao0Ruwei Zhao1Qilu Liu2Yan Sheng3Tianxiang Xu4Laboratory of Infrared Materials and Devices, Research Institute of Advanced Technologies, Zhejiang Key Laboratory of Photoelectric Materials and Devices and Engineering Research Center for Advanced Infrared Photoelectric Materials and Devices of Zhejiang Province, Ningbo University, Ningbo 315211, ChinaLaboratory of Infrared Materials and Devices, Research Institute of Advanced Technologies, Zhejiang Key Laboratory of Photoelectric Materials and Devices and Engineering Research Center for Advanced Infrared Photoelectric Materials and Devices of Zhejiang Province, Ningbo University, Ningbo 315211, ChinaState Key Laboratory of Crystal Materials and Institute of Crystal Materials, Shandong University, Jinan 250100, ChinaLaboratory of Infrared Materials and Devices, Research Institute of Advanced Technologies, Zhejiang Key Laboratory of Photoelectric Materials and Devices and Engineering Research Center for Advanced Infrared Photoelectric Materials and Devices of Zhejiang Province, Ningbo University, Ningbo 315211, ChinaLaboratory of Infrared Materials and Devices, Research Institute of Advanced Technologies, Zhejiang Key Laboratory of Photoelectric Materials and Devices and Engineering Research Center for Advanced Infrared Photoelectric Materials and Devices of Zhejiang Province, Ningbo University, Ningbo 315211, ChinaThis paper demonstrates the sorting and detection of near-infrared vortex light using a nonlinear Dammann vortex grating. By incorporating a forked structure into the nonlinear Dammann grating, the resulting nonlinear Dammann vortex grating is capable of converting near-infrared Gaussian light into a visible vortex array. The array comprises 49 independent detection channels, each of which can precisely control the inherent topological charge values. When the topological charge value of a detection channel’s vortex light matches that of the incident vortex, the vortex degenerates into a Gaussian spot, thereby enabling the detection of the incident vortex’s topological charge. Our experimental results show that this grating, with its 49 independent detection channels, can detect the topological charge values of vortex light in the near-infrared range from l = −12 to +12 in real-time. Compared to existing solutions, this grating offers enhanced versatility and has potential applications in optical communication systems for the transmission, reception, and multiplexing of OV beams.https://www.mdpi.com/2304-6732/12/6/532nonlinear photonic crystalsecond harmonic generationoptical vorticesDammann vortex grating |
| spellingShingle | Hui Zhao Ruwei Zhao Qilu Liu Yan Sheng Tianxiang Xu High-Capacity Near-Infrared Optical Vortex Sorting and Detection by Nonlinear Dammann Vortex Grating Photonics nonlinear photonic crystal second harmonic generation optical vortices Dammann vortex grating |
| title | High-Capacity Near-Infrared Optical Vortex Sorting and Detection by Nonlinear Dammann Vortex Grating |
| title_full | High-Capacity Near-Infrared Optical Vortex Sorting and Detection by Nonlinear Dammann Vortex Grating |
| title_fullStr | High-Capacity Near-Infrared Optical Vortex Sorting and Detection by Nonlinear Dammann Vortex Grating |
| title_full_unstemmed | High-Capacity Near-Infrared Optical Vortex Sorting and Detection by Nonlinear Dammann Vortex Grating |
| title_short | High-Capacity Near-Infrared Optical Vortex Sorting and Detection by Nonlinear Dammann Vortex Grating |
| title_sort | high capacity near infrared optical vortex sorting and detection by nonlinear dammann vortex grating |
| topic | nonlinear photonic crystal second harmonic generation optical vortices Dammann vortex grating |
| url | https://www.mdpi.com/2304-6732/12/6/532 |
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