Simulation analysis and design of a dynamic refocus system for laser guide star

	Simulation analysis and design of a dynamic refocus system for laser guide star
	Shao, L.; Z. Cao; Q. Mu; L. Hu; J. Zhao; H. Zhang and L. Xuan
	2015
发表期刊	Guangxue Xuebao/Acta Optica Sinica
卷号	35 期号:9
摘要	By increasing the sample scattering layer thickness of laser guide star, the detection energy of wavefront sensor is enhanced but makes the detection spot diffused. To solve this problem, a dynamic focus system is designed. Influence of the sample thickness on the wave-front detection energy is analyzed and result shows that the wave-front detection energy increases nonlinearly with the sample thickness. When the sample thickness is 4 km with the laser pulse energy of 10 mJ, the number of received photons is 120 per sub-aperture of telescope, which meets the detection requirements. Then effect of diffusion spot on wave-front detection accuracy is analyzed, the result shows that the wave-front measurement error is about 0.5 when the sample thickness is 4 km, whichleads accurate detection unfeasible. In order to achieve accurate detection, dynamic focus system is designed based on the analysis results, moving distance of the focusing mirror is reduced from111mm to 100 m, and moving speed from 4200 m/s to 3.8 m/s, which meet the application requirements. Zemax softwave optimized results show that the optical system can achieve the ideal imaging for 4 km sample thickness range. , 2015, Chinese Optical Society. All right reserved.
文章类型	期刊论文
收录类别	EI
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/56187
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Shao, L.,Z. Cao,Q. Mu,et al. Simulation analysis and design of a dynamic refocus system for laser guide star[J]. Guangxue Xuebao/Acta Optica Sinica,2015,35(9).
APA	Shao, L.,Z. Cao,Q. Mu,L. Hu,J. Zhao,&H. Zhang and L. Xuan.(2015).Simulation analysis and design of a dynamic refocus system for laser guide star.Guangxue Xuebao/Acta Optica Sinica,35(9).
MLA	Shao, L.,et al."Simulation analysis and design of a dynamic refocus system for laser guide star".Guangxue Xuebao/Acta Optica Sinica 35.9(2015).

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