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High-speed SPGD wavefront controller for an adaptive optics system without wavefront sensor
Caixia Wang; Xinyang Li; Mei Li; Jongwei Ye; Bo Chen
Volume7658
Pages76585T (6 pp.)
2010
Language英语
Indexed ByEi ; ISTP
Subtype会议论文
AbstractA non-conventional adaptive optics system based on direct system performance metric optimization is illustrated. The system does not require wave-front sensor which is difficult to work under the poor condition such as beam cleanup for the anomalous light beam. The system comprises a high speed wavefront controller based on Stochastic Parallel Gradient Descent (SPGD) Algorithm, a deformable mirror, a tip/tilt mirror and a far-field system performance metric sensor. The architecture of the wave-front controller is based on a combination of Field Programmable Gate Array (FPGA) and floating-point Digital Signal Processor (DSP). The Zernike coefficient information is applied to improve the iteration speed. The experimental results show that the beam cleanup system based on SPGD keep a high iteration speed. The controller can compensate the wavefront aberration and tilt excursion effectively.; A non-conventional adaptive optics system based on direct system performance metric optimization is illustrated. The system does not require wave-front sensor which is difficult to work under the poor condition such as beam cleanup for the anomalous light beam. The system comprises a high speed wavefront controller based on Stochastic Parallel Gradient Descent (SPGD) Algorithm, a deformable mirror, a tip/tilt mirror and a far-field system performance metric sensor. The architecture of the wave-front controller is based on a combination of Field Programmable Gate Array (FPGA) and floating-point Digital Signal Processor (DSP). The Zernike coefficient information is applied to improve the iteration speed. The experimental results show that the beam cleanup system based on SPGD keep a high iteration speed. The controller can compensate the wavefront aberration and tilt excursion effectively.
Conference NameProceedings of the SPIE - The International Society for Optical Engineering
Conference Date2010
Document Type会议论文
Identifierhttp://ir.ioe.ac.cn/handle/181551/7746
Collection自适应光学技术研究室(八室)
Corresponding AuthorCaixia Wang
Affiliation中国科学院光电技术研究所
Recommended Citation
GB/T 7714
Caixia Wang,Xinyang Li,Mei Li,et al. High-speed SPGD wavefront controller for an adaptive optics system without wavefront sensor[C],2010:76585T (6 pp.).
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