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Department光电工程总体研究室(一室)
Propagation of rotational Risley-prism-array-based Gaussian beams in turbulent atmosphere
Chen, Feng1,2,3; Ma, Haotong1,2; Dong, Li1,2,3; Ren, Ge1,2; Qi, Bo1,2; Tan, Yufeng1,2,3
Source PublicationProceedings of SPIE - YOUNG SCIENTISTS FORUM 2017
Volume10710
Pages1071037
2018
Language英语
ISSN0277-786X
DOI10.1117/12.2316777
Indexed BySCI ; Ei
WOS IDWOS:000451888100110
EI Accession Number20181505006953
SubtypeC
AbstractLimited by the size and weight of prism and optical assembling, Rotational Risley-prism-array system is a simple but effective way to realize high power and superior beam quality of deflecting laser output. In this paper, the propagation of the rotational Risley-prism-array-based Gaussian beam array in atmospheric turbulence is studied in detail. An analytical expression for the average intensity distribution at the receiving plane is derived based on nonparaxial ray tracing method and extended Huygens-Fresnel principle. Power in the diffraction-limited bucket is chosen to evaluate beam quality. The effect of deviation angle, propagation distance and intensity of turbulence on beam quality is studied in detail by quantitative simulation. It reveals that with the propagation distance increasing, the intensity distribution gradually evolves from multiple-petal-like shape into the pattern that contains one main-lobe in the center with multiple side-lobes in weak turbulence. The beam quality of rotational Risley-prism-array-based Gaussian beam array with lower deviation angle is better than its counterpart with higher deviation angle when propagating in weak and medium turbulent (i.e. C-n(2) < 10(-13) m(-2/3)), the beam quality of higher deviation angle arrays degrades faster as the intensity of turbulence gets stronger. In the case of propagating in strong turbulence, the long propagation distance (i.e. z > 10km) and deviation angle have no influence on beam quality.
Keywordrotational Risley-prism-array turbulent atmosphere beam quality performance
EI KeywordsAtmospheric turbulence ; Gaussian distribution ; Prisms ; Ray tracing
Conference NameYoung Scientists ForumYoung Scientists Forum
Conference DateNOV 24-26, 2017NOV 24-26, 2017
Conference PlaceShanghai, PEOPLES R CHINAShanghai, PEOPLES R CHINA
EI Classification Number443.1 Atmospheric Properties ; 711 Electromagnetic Waves ; 741.1 Light/Optics ; 741.3 Optical Devices and Systems ; 922.1 Probability Theory
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Document Type会议论文
Identifierhttp://ir.ioe.ac.cn/handle/181551/9131
Collection光电工程总体研究室(一室)
Affiliation1.Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu, Sichuan; 610209, China;
2.Key Laboratory of Optical Engineering, Chinese Academy of Sciences, Chengdu, Sichuan; 610209, China;
3.University of Chinese Academy of Sciences, Beijing; 100039, China
Recommended Citation
GB/T 7714
Chen, Feng,Ma, Haotong,Dong, Li,et al. Propagation of rotational Risley-prism-array-based Gaussian beams in turbulent atmosphere[C],2018:1071037.
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