Focusing flattop beam shaping with complex modulation holography
Source abstract
Abstract
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.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Digital Holography and Microscopy · Advanced Optical Imaging Technologies · Orbital Angular Momentum in Optics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Shandong Collaborative Innovation Center of Laser Green Intelligent Manufacturing Technology and Equipment, Qingdao University of Technology 1 , Qingdao, Shandong 266520, China
The Photon Factory, Department of Physics, University of Auckland 2 , Auckland 1010, New Zealand
3Shandong Energy Heavy Industry Group, Hengtu Technology Co., Ltd, Taian, Shandong 271200, China
Funding
Key Technology Research and Development Program of Shandong · China Postdoctoral Science Foundation · The New Zealand Ministry of Bussiness, Innovation and Employment · Overseas Expertise Introduction Project for Discipline Innovation · National Natural Science Foundation of China
References (24)
Show source-provided references
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