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Proceedings Paper

High-speed SPGD wavefront controller for an adaptive optics system without wavefront sensor
Author(s): Caixia Wang; Xinyang Li; Mei Li; Jongwei Ye; Bo Chen
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Paper Abstract

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.

Paper Details

Date Published: 22 October 2010
PDF: 6 pages
Proc. SPIE 7658, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Detector, Imager, Display, and Energy Conversion Technology, 76585T (22 October 2010); doi: 10.1117/12.866011
Show Author Affiliations
Caixia Wang, The Key Lab. on Adaptive Optics (China)
Institute of Optics and Electronics (China)
Graduate Univ. of Chinese Academy of Sciences (China)
Xinyang Li, The Key Lab. on Adaptive Optics (China)
Institute of Optics and Electronics (China)
Mei Li, The Key Lab. on Adaptive Optics (China)
Institute of Optics and Electronics (China)
Jongwei Ye, The Key Lab. on Adaptive Optics (China)
Institute of Optics and Electronics (China)
Bo Chen, The Key Lab. on Adaptive Optics (China)
Institute of Optics and Electronics (China)
Graduate Univ. of Chinese Academy of Sciences (China)


Published in SPIE Proceedings Vol. 7658:
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Detector, Imager, Display, and Energy Conversion Technology
Yadong Jiang; Bernard Kippelen; Junsheng Yu, Editor(s)

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