Performance Comparison of Wavefront-Sensorless Adaptive Optics Systems by Using of the Focal Plane
The correction capability and the convergence speed of the wavefront-sensorless adaptive optics (AO) system are compared based on two different system control algorithms, which both use the information of focal plane. The first algorithm is designed through the linear relationship between the second...
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| Format: | Article |
| Language: | English |
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Wiley
2015-01-01
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| Series: | International Journal of Optics |
| Online Access: | http://dx.doi.org/10.1155/2015/985351 |
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| author | Huizhen Yang Zhen Zhang Jian Wu |
| author_facet | Huizhen Yang Zhen Zhang Jian Wu |
| author_sort | Huizhen Yang |
| collection | DOAJ |
| description | The correction capability and the convergence speed of the wavefront-sensorless adaptive optics (AO) system are compared based on two different system control algorithms, which both use the information of focal plane. The first algorithm is designed through the linear relationship between the second moment of the aberration gradients and the masked far-field intensity distribution and the second is stochastic parallel gradient descent (SPGD), which is the most commonly used algorithm in wavefront-sensorless AO systems. A wavefront-sensorless AO model is established with a 61-element deformable mirror (DM) and a CCD. Performance of the two control algorithms is investigated and compared through correcting different wavefront aberrations. Results show that the correction ability of AO system based on the proposed control algorithm is obviously better than that of AO system based on SPGD algorithm when the wavefront aberrations increase. The time needed by the proposed control algorithm is much less than that of SPGD when the AO system achieves similar correction results. Additionally, the convergence speed of the proposed control algorithm is independent of the turbulence strength while the number of intensity measurements needed by SPGD increases as the turbulence strength magnifies. |
| format | Article |
| id | doaj-art-1d4e5a0a87004d97958298aefc53d56c |
| institution | Kabale University |
| issn | 1687-9384 1687-9392 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Optics |
| spelling | doaj-art-1d4e5a0a87004d97958298aefc53d56c2025-08-20T03:54:51ZengWileyInternational Journal of Optics1687-93841687-93922015-01-01201510.1155/2015/985351985351Performance Comparison of Wavefront-Sensorless Adaptive Optics Systems by Using of the Focal PlaneHuizhen Yang0Zhen Zhang1Jian Wu2School of Electronic Engineering, Huaihai Institute of Technology, Lianyungang 222005, ChinaSchool of Information and Electrical, China University of Mining and Technology, Xuzhou 221008, ChinaSchool of Information and Electrical, China University of Mining and Technology, Xuzhou 221008, ChinaThe correction capability and the convergence speed of the wavefront-sensorless adaptive optics (AO) system are compared based on two different system control algorithms, which both use the information of focal plane. The first algorithm is designed through the linear relationship between the second moment of the aberration gradients and the masked far-field intensity distribution and the second is stochastic parallel gradient descent (SPGD), which is the most commonly used algorithm in wavefront-sensorless AO systems. A wavefront-sensorless AO model is established with a 61-element deformable mirror (DM) and a CCD. Performance of the two control algorithms is investigated and compared through correcting different wavefront aberrations. Results show that the correction ability of AO system based on the proposed control algorithm is obviously better than that of AO system based on SPGD algorithm when the wavefront aberrations increase. The time needed by the proposed control algorithm is much less than that of SPGD when the AO system achieves similar correction results. Additionally, the convergence speed of the proposed control algorithm is independent of the turbulence strength while the number of intensity measurements needed by SPGD increases as the turbulence strength magnifies.http://dx.doi.org/10.1155/2015/985351 |
| spellingShingle | Huizhen Yang Zhen Zhang Jian Wu Performance Comparison of Wavefront-Sensorless Adaptive Optics Systems by Using of the Focal Plane International Journal of Optics |
| title | Performance Comparison of Wavefront-Sensorless Adaptive Optics Systems by Using of the Focal Plane |
| title_full | Performance Comparison of Wavefront-Sensorless Adaptive Optics Systems by Using of the Focal Plane |
| title_fullStr | Performance Comparison of Wavefront-Sensorless Adaptive Optics Systems by Using of the Focal Plane |
| title_full_unstemmed | Performance Comparison of Wavefront-Sensorless Adaptive Optics Systems by Using of the Focal Plane |
| title_short | Performance Comparison of Wavefront-Sensorless Adaptive Optics Systems by Using of the Focal Plane |
| title_sort | performance comparison of wavefront sensorless adaptive optics systems by using of the focal plane |
| url | http://dx.doi.org/10.1155/2015/985351 |
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