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Adaptive-optics compensation by distributed beacons for non-Kolmogorov turbulence
Rao, CH; Jiang, WH; Ling, N
Source PublicationAPPLIED OPTICS
Volume40Issue:21Pages:3441-3449
2001-07-20
Language英语
Indexed BySCI
WOS IDWOS:000169932100003
SubtypeArticle
AbstractIn optical propagation through atmospheric turbulence, the performance of compensation with adaptive optics depends on a beacon's spatial distribution. With distributed beacons, the inefficiency of the modal correction, which is defined as the ratio of the anisoplanatic error of the jth mode and the Zernike-coefficient variance, is derived by use of the wave-front expansion on the Zernike polynomials for non-Kolmogorov turbulence. Numerical results are presented for laser beam propagation through constant turbulence with an offset point beacon and an on-axis uniform circular beacon. The results show that compensation for an on-axis uniform circular beacon is much more effective than that for an offset point beacon. The low-order modes are much more correlated than the higher-order modes. The larger the power-law exponent of the refractive-index power spectrum beta, the smaller the propagation path length L and the larger the diameter D of the telescope aperture, the more effective the compensation is. For a specific extended degree of beacon for which there are a maximum number of modes N-max to be corrected, only low-order-correction systems are useful. (C) 2001 Optical Society of America.
WOS KeywordSTAR IMAGE MOTION ; WAVE-FRONT SENSOR ; ATMOSPHERIC-TURBULENCE ; ZERNIKE POLYNOMIALS ; GUIDE-STAR ; ANISOPLANATISM
WOS Research AreaOptics
WOS SubjectOptics
Citation statistics
Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ioe.ac.cn/handle/181551/3485
Collection光电技术研究所被WoS收录文章
AffiliationChinese Acad Sci, Inst Opt & Elect, Chengdu 610209, Peoples R China
Recommended Citation
GB/T 7714
Rao, CH,Jiang, WH,Ling, N. Adaptive-optics compensation by distributed beacons for non-Kolmogorov turbulence[J]. APPLIED OPTICS,2001,40(21):3441-3449.
APA Rao, CH,Jiang, WH,&Ling, N.(2001).Adaptive-optics compensation by distributed beacons for non-Kolmogorov turbulence.APPLIED OPTICS,40(21),3441-3449.
MLA Rao, CH,et al."Adaptive-optics compensation by distributed beacons for non-Kolmogorov turbulence".APPLIED OPTICS 40.21(2001):3441-3449.
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