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Adaptive conversion of input beam with unsymmetrical intensity distribution to near diffraction-limited flattop beam based on dual phase-only liquid-crystal spatial light modulators
Ma, Haotong1,2,4; Zhang, Guowen3; Xie, Zongliang1,2; Qi, Bo1,2; Ren, Ge1,2; Wang, Sanhong5
Source PublicationProceedings of SPIE: Technologies for Optical Countermeasures XIII
Volume9989Pages:99890S
2016
Language英语
ISSN0277-786X
DOI10.1117/12.2242023
SubtypeC
AbstractWe propose and demonstrate the adaptive conversion of input beam with unsymmetrical intensity distribution into a near-diffraction-limited flattop beam with desired parameters in the near field based on a combination of dual phase-only liquid crystal spatial light modulators (LC-SLMs) and the stochastic parallel gradient descent (SPGD) algorithm. One phase-only LC-SLM redistributes the intensity of the input beam to the desired distributions at the other phase-only LCSLM plane, and the other phase-only LC-SLM compensates the wavefront of the output beam. The SPGD algorithm adaptively optimizes the phase distributions of dual phase-only LC-SLMs to reduce the variance between the actual beam shape and the target beam shape. The experimental results on a prefabricated unsymmetrical input beam show that the technique is capable of adaptively creating near-diffraction-limited flattop beams with desired parameters. © 2016 SPIE.
KeywordAdaptive Optics Diffraction Gradient Methods Laser Beam Welding Light Modulation Liquid Crystals Liquids Spatial Distribution Steel Beams And Girders Stochastic Systems
Indexed BySCI ; Ei
WOS IDWOS:000391294400018
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Document Type期刊论文
Identifierhttp://ir.ioe.ac.cn/handle/181551/8557
Collection光电工程总体研究室(一室)
Affiliation1. Institute of Optics and Electronics, Chinese Academy of Scieces, Chengdu, Sichuan
2.610209, China
3. Key Laboratory of Optical Engineering, Chinese Academy of Sciences, Chengdu, Sichuan
4.610209, China
5. National Laboratory on High Power Laser and Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai
6.201800, China
7. College of Opto-electronic Science and Engineering, National University of Defense Technology, Changsha, Hunan
8.410073, China
9. Taiyuan satellite launch center, Taiyuan, Shanxi
10.036301, China
Recommended Citation
GB/T 7714
Ma, Haotong,Zhang, Guowen,Xie, Zongliang,et al. Adaptive conversion of input beam with unsymmetrical intensity distribution to near diffraction-limited flattop beam based on dual phase-only liquid-crystal spatial light modulators[J]. Proceedings of SPIE: Technologies for Optical Countermeasures XIII,2016,9989:99890S.
APA Ma, Haotong,Zhang, Guowen,Xie, Zongliang,Qi, Bo,Ren, Ge,&Wang, Sanhong.(2016).Adaptive conversion of input beam with unsymmetrical intensity distribution to near diffraction-limited flattop beam based on dual phase-only liquid-crystal spatial light modulators.Proceedings of SPIE: Technologies for Optical Countermeasures XIII,9989,99890S.
MLA Ma, Haotong,et al."Adaptive conversion of input beam with unsymmetrical intensity distribution to near diffraction-limited flattop beam based on dual phase-only liquid-crystal spatial light modulators".Proceedings of SPIE: Technologies for Optical Countermeasures XIII 9989(2016):99890S.
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