Focusing flattop beam shaping with complex modulation holography
A complex modulation algorithm for focusing beam shaping with a phase-only spatial light modulator is designed. This method modulates the amplitude and phase of a collimated beam synchronously, and the modulated beam passing through an objective lens will generate a shaped focusing beam. The charact...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2021-10-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/5.0065903 |
| _version_ | 1798031959016865792 |
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| author | Jing Shao Thomas Haase Ruolan Zhang Claude Aguergaray Neil Broderick Shufeng Sun |
| author_facet | Jing Shao Thomas Haase Ruolan Zhang Claude Aguergaray Neil Broderick Shufeng Sun |
| author_sort | Jing Shao |
| collection | DOAJ |
| description | A complex modulation algorithm for focusing beam shaping with a phase-only spatial light modulator is designed. This method modulates the amplitude and phase of a collimated beam synchronously, and the modulated beam passing through an objective lens will generate a shaped focusing beam. The characteristic of the complex modulation was studied, while the Mixed-Region Amplitude Freedom (MRAF) method was selected as a comparative reference in this research. In the theoretical simulation, the complex modulation shows excellent performance with a roughness of 0.32% RMS and 0.54% MAX. Otherwise, to further verify this complex modulation algorithm, an experiment was implemented to generate a square-shaped focusing flattop beam. The complex modulation generated a flattop beam with a roughness of 3.1% RMS and 6.1% MAX, better than the MRAF method. This result also proves that this complex modulation has better robustness. |
| first_indexed | 2024-04-11T20:06:07Z |
| format | Article |
| id | doaj.art-b0c3746b57e847bab3ccc3c4b733fb02 |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-04-11T20:06:07Z |
| publishDate | 2021-10-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-b0c3746b57e847bab3ccc3c4b733fb022022-12-22T04:05:19ZengAIP Publishing LLCAIP Advances2158-32262021-10-011110105118105118-710.1063/5.0065903Focusing flattop beam shaping with complex modulation holographyJing Shao0Thomas Haase1Ruolan Zhang2Claude Aguergaray3Neil Broderick4Shufeng Sun5Shandong Collaborative Innovation Center of Laser Green Intelligent Manufacturing Technology and Equipment, Qingdao University of Technology, Qingdao, Shandong 266520, ChinaThe Photon Factory, Department of Physics, University of Auckland, Auckland 1010, New ZealandShandong Collaborative Innovation Center of Laser Green Intelligent Manufacturing Technology and Equipment, Qingdao University of Technology, Qingdao, Shandong 266520, ChinaThe Photon Factory, Department of Physics, University of Auckland, Auckland 1010, New ZealandThe Photon Factory, Department of Physics, University of Auckland, Auckland 1010, New ZealandShandong Collaborative Innovation Center of Laser Green Intelligent Manufacturing Technology and Equipment, Qingdao University of Technology, Qingdao, Shandong 266520, ChinaA complex modulation algorithm for focusing beam shaping with a phase-only spatial light modulator is designed. This method modulates the amplitude and phase of a collimated beam synchronously, and the modulated beam passing through an objective lens will generate a shaped focusing beam. The characteristic of the complex modulation was studied, while the Mixed-Region Amplitude Freedom (MRAF) method was selected as a comparative reference in this research. In the theoretical simulation, the complex modulation shows excellent performance with a roughness of 0.32% RMS and 0.54% MAX. Otherwise, to further verify this complex modulation algorithm, an experiment was implemented to generate a square-shaped focusing flattop beam. The complex modulation generated a flattop beam with a roughness of 3.1% RMS and 6.1% MAX, better than the MRAF method. This result also proves that this complex modulation has better robustness.http://dx.doi.org/10.1063/5.0065903 |
| spellingShingle | Jing Shao Thomas Haase Ruolan Zhang Claude Aguergaray Neil Broderick Shufeng Sun Focusing flattop beam shaping with complex modulation holography AIP Advances |
| title | Focusing flattop beam shaping with complex modulation holography |
| title_full | Focusing flattop beam shaping with complex modulation holography |
| title_fullStr | Focusing flattop beam shaping with complex modulation holography |
| title_full_unstemmed | Focusing flattop beam shaping with complex modulation holography |
| title_short | Focusing flattop beam shaping with complex modulation holography |
| title_sort | focusing flattop beam shaping with complex modulation holography |
| url | http://dx.doi.org/10.1063/5.0065903 |
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