Flattop Beam Shaping Using Hybrid Gratings
A new method of laser beam shaping with hybrid gratings is presented. The hybrid gratings consist of a blazed grating and a gradient binary grating. The blazed grating is used to separate the incident Gaussian beam into zero order and nonzero diffraction orders. A filter is used to block the nonzero...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2022-01-01
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| Series: | IEEE Photonics Journal |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/9809825/ |
| _version_ | 1811292715577507840 |
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| author | Zhongsheng Zhai Tian Gao Yi Zhang Qinghua Lv Xuanze Wang Boya Xie |
| author_facet | Zhongsheng Zhai Tian Gao Yi Zhang Qinghua Lv Xuanze Wang Boya Xie |
| author_sort | Zhongsheng Zhai |
| collection | DOAJ |
| description | A new method of laser beam shaping with hybrid gratings is presented. The hybrid gratings consist of a blazed grating and a gradient binary grating. The blazed grating is used to separate the incident Gaussian beam into zero order and nonzero diffraction orders. A filter is used to block the nonzero order beams and obtain the zero orders with the desired shape. The gradient binary grating is used to improve the energy distribution of the inside area of the geometric shape. A phase hologram designed with the desired shape and hybrid gratings, is loaded on a phase-only spatial light modulation to achieve arbitrary geometric flattop shapes with high uniformity. Squared and hexagonal shaping experiments demonstrated that the presented method can convert a Gaussian beam into a flattop beam with steepness edge and high uniformity. Experimental results show that the beam non-uniformity is less than 0.037. |
| first_indexed | 2024-04-13T04:50:29Z |
| format | Article |
| id | doaj.art-3dfd64ebdce147cf868e246194896f53 |
| institution | Directory Open Access Journal |
| issn | 1943-0655 |
| language | English |
| last_indexed | 2024-04-13T04:50:29Z |
| publishDate | 2022-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj.art-3dfd64ebdce147cf868e246194896f532022-12-22T03:01:42ZengIEEEIEEE Photonics Journal1943-06552022-01-011441510.1109/JPHOT.2022.31869029809825Flattop Beam Shaping Using Hybrid GratingsZhongsheng Zhai0https://orcid.org/0000-0001-6420-1790Tian Gao1https://orcid.org/0000-0002-6518-3245Yi Zhang2Qinghua Lv3Xuanze Wang4https://orcid.org/0000-0003-4762-995XBoya Xie5Hubei Key Laboratory of Modern Manufacturing Quantity Engineering, School of Mechanical Engineering, Wuhan, ChinaHubei Key Laboratory of Modern Manufacturing Quantity Engineering, School of Mechanical Engineering, Wuhan, ChinaHubei Key Laboratory of Modern Manufacturing Quantity Engineering, School of Mechanical Engineering, Wuhan, ChinaSchool of Science, Hubei University of Technology, Wuhan, ChinaHubei Key Laboratory of Modern Manufacturing Quantity Engineering, School of Mechanical Engineering, Wuhan, ChinaHubei Key Laboratory of Modern Manufacturing Quantity Engineering, School of Mechanical Engineering, Wuhan, ChinaA new method of laser beam shaping with hybrid gratings is presented. The hybrid gratings consist of a blazed grating and a gradient binary grating. The blazed grating is used to separate the incident Gaussian beam into zero order and nonzero diffraction orders. A filter is used to block the nonzero order beams and obtain the zero orders with the desired shape. The gradient binary grating is used to improve the energy distribution of the inside area of the geometric shape. A phase hologram designed with the desired shape and hybrid gratings, is loaded on a phase-only spatial light modulation to achieve arbitrary geometric flattop shapes with high uniformity. Squared and hexagonal shaping experiments demonstrated that the presented method can convert a Gaussian beam into a flattop beam with steepness edge and high uniformity. Experimental results show that the beam non-uniformity is less than 0.037.https://ieeexplore.ieee.org/document/9809825/Laser beam shapingspatial light modulationgradient binary grating |
| spellingShingle | Zhongsheng Zhai Tian Gao Yi Zhang Qinghua Lv Xuanze Wang Boya Xie Flattop Beam Shaping Using Hybrid Gratings IEEE Photonics Journal Laser beam shaping spatial light modulation gradient binary grating |
| title | Flattop Beam Shaping Using Hybrid Gratings |
| title_full | Flattop Beam Shaping Using Hybrid Gratings |
| title_fullStr | Flattop Beam Shaping Using Hybrid Gratings |
| title_full_unstemmed | Flattop Beam Shaping Using Hybrid Gratings |
| title_short | Flattop Beam Shaping Using Hybrid Gratings |
| title_sort | flattop beam shaping using hybrid gratings |
| topic | Laser beam shaping spatial light modulation gradient binary grating |
| url | https://ieeexplore.ieee.org/document/9809825/ |
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