The Error Analysis of the Complex Modulation for Flattop Focusing Beam Shaping
In order to obtain a focusing flattop beam with high uniformity, complex modulation is used to modulate the optical pupil function, and the beam shaping algorithm is designed with a single phase-only spatial light modulator (SLM). Actually, the wavefront aberrations introduced by each element reduce...
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| Format: | Article |
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Frontiers Media S.A.
2022-03-01
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| Series: | Frontiers in Physics |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fphy.2022.863046/full |
| _version_ | 1811311771923775488 |
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| author | Jing Shao Hao Dong Suli Han Shufeng Sun Zhenwei Nie |
| author_facet | Jing Shao Hao Dong Suli Han Shufeng Sun Zhenwei Nie |
| author_sort | Jing Shao |
| collection | DOAJ |
| description | In order to obtain a focusing flattop beam with high uniformity, complex modulation is used to modulate the optical pupil function, and the beam shaping algorithm is designed with a single phase-only spatial light modulator (SLM). Actually, the wavefront aberrations introduced by each element reduce the uniformity of the shaped beam. In particular, the wavefront aberrations in different positions have different effects on this complex modulation algorithm. However, there is a lack of the corresponding error data and robustness analysis. Here, the error and robustness of the complex modulation algorithm are analyzed when different types of aberrations (defocus, astigmatism, and coma) exist in different positions of the shaping optical system, and the mixed area magnification-free (MRAF) algorithm is used as a reference for comparison. The results show that coma has the greatest effect on the beam shaping quality. It is also proved that the impact on the beam quality when there are aberrations in the laser and beam expansion system is greater than those in the SLM and the focusing lens for the complex modulation algorithm, which is different from the MRAF case. |
| first_indexed | 2024-04-13T10:23:41Z |
| format | Article |
| id | doaj.art-1fe463814d394d40b6c1bf5c598b1980 |
| institution | Directory Open Access Journal |
| issn | 2296-424X |
| language | English |
| last_indexed | 2024-04-13T10:23:41Z |
| publishDate | 2022-03-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Physics |
| spelling | doaj.art-1fe463814d394d40b6c1bf5c598b19802022-12-22T02:50:22ZengFrontiers Media S.A.Frontiers in Physics2296-424X2022-03-011010.3389/fphy.2022.863046863046The Error Analysis of the Complex Modulation for Flattop Focusing Beam ShapingJing Shao0Hao Dong1Suli Han2Shufeng Sun3Zhenwei Nie4Key Lab of Industrial Fluid Energy Conservation and Pollution Control, Qingdao University of Technology, Qingdao, ChinaKey Lab of Industrial Fluid Energy Conservation and Pollution Control, Qingdao University of Technology, Qingdao, ChinaKey Lab of Industrial Fluid Energy Conservation and Pollution Control, Qingdao University of Technology, Qingdao, ChinaKey Lab of Industrial Fluid Energy Conservation and Pollution Control, Qingdao University of Technology, Qingdao, ChinaChangchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences (CAS), Changchun, ChinaIn order to obtain a focusing flattop beam with high uniformity, complex modulation is used to modulate the optical pupil function, and the beam shaping algorithm is designed with a single phase-only spatial light modulator (SLM). Actually, the wavefront aberrations introduced by each element reduce the uniformity of the shaped beam. In particular, the wavefront aberrations in different positions have different effects on this complex modulation algorithm. However, there is a lack of the corresponding error data and robustness analysis. Here, the error and robustness of the complex modulation algorithm are analyzed when different types of aberrations (defocus, astigmatism, and coma) exist in different positions of the shaping optical system, and the mixed area magnification-free (MRAF) algorithm is used as a reference for comparison. The results show that coma has the greatest effect on the beam shaping quality. It is also proved that the impact on the beam quality when there are aberrations in the laser and beam expansion system is greater than those in the SLM and the focusing lens for the complex modulation algorithm, which is different from the MRAF case.https://www.frontiersin.org/articles/10.3389/fphy.2022.863046/fullholographygratingsdiffractive opticserror analysisfocusing beam shaping |
| spellingShingle | Jing Shao Hao Dong Suli Han Shufeng Sun Zhenwei Nie The Error Analysis of the Complex Modulation for Flattop Focusing Beam Shaping Frontiers in Physics holography gratings diffractive optics error analysis focusing beam shaping |
| title | The Error Analysis of the Complex Modulation for Flattop Focusing Beam Shaping |
| title_full | The Error Analysis of the Complex Modulation for Flattop Focusing Beam Shaping |
| title_fullStr | The Error Analysis of the Complex Modulation for Flattop Focusing Beam Shaping |
| title_full_unstemmed | The Error Analysis of the Complex Modulation for Flattop Focusing Beam Shaping |
| title_short | The Error Analysis of the Complex Modulation for Flattop Focusing Beam Shaping |
| title_sort | error analysis of the complex modulation for flattop focusing beam shaping |
| topic | holography gratings diffractive optics error analysis focusing beam shaping |
| url | https://www.frontiersin.org/articles/10.3389/fphy.2022.863046/full |
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