Share Email Print
cover

Proceedings Paper

Designing the actuator distribution of DM based on SPGD optimization
Author(s): Huafeng Yang; Changhui Rao; Yudong Zhang; Wenhan Jiang; Huizhen Yang
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

In this paper, we have attempted the stochastic parallel gradient descent (SPGD) algorithm to optimize actuator distribution of deformable mirrors (DM) in an adaptive optics (AO) system. In this process, we use the gauss model as the influence function of DM, and the least square-fitting algorithm is performed to fit aberration wavefront. The center locations of all actuators will be optimized as the controlled parameters, and the RMS of residual wavefront is used directly as cost function for gradient estimation. Numerical simulations for the 32 actuators DM are presented. We get the relative steady optimized distribution of the actuators on the DM for every Zernike wavefront, which can decrease the errors of residual wavefront effectively compared to square pattern. The results show that the optimized distribution of actuators has obvious symmetrical relativity with variety of corrected objects; and it is advisable to place some of the actuators at the outer edge of the effective aperture. The SPGD algorithm has been proved valid for DM design, while the corrected wavefront has some regularity.

Paper Details

Date Published: 27 November 2007
PDF: 9 pages
Proc. SPIE 6722, 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 67222C (27 November 2007); doi: 10.1117/12.783138
Show Author Affiliations
Huafeng Yang, Institute of Optics and Electronics (China)
National Univ. of Defense Technology (China)
Changhui Rao, Institute of Optics and Electronics (China)
Yudong Zhang, Institute of Optics and Electronics (China)
Wenhan Jiang, Institute of Optics and Electronics (China)
Huizhen Yang, Institute of Optics and Electronics (China)


Published in SPIE Proceedings Vol. 6722:
3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies

© SPIE. Terms of Use
Back to Top