像差对聚焦高斯光束大气传输轴闪烁特性的影响

HFCAS OpenIR

	像差对聚焦高斯光束大气传输轴闪烁特性的影响
其他题名	Effects of Aberrations on On-Axis Scintillation Propagating Properties of Focus Gaussian Beams in Turbulent Atmosphere
	2017-01-01
发表期刊	光学学报
ISSN	0253-2239
摘要	采用多层相位屏的数值模拟方法,定量研究了几种典型像差对聚焦高斯光束在湍流大气中传输的轴闪烁特性的影响。研究结果表明,像散和慧差像差对远场光斑的轴闪烁分别具有较强的抑制和促进作用,较强的慧差和像散能分别提前和延后光斑轴闪烁饱和的出现。湍流较弱时的聚焦高斯光束大气传输光强起伏概率严重,湍流越强,光强起伏概率越接近于对数正态分布,且基本满足偏斜度为负,陡峭度为正。弱、中等湍流强度下,像差权重较大时,光强起伏概率分布主要受像差影响;像差权重系数较小时,光强起伏概率分布主要受湍流效应的影响,且各像差主要影响光强较弱区域的起伏分布情况。强湍流强度下,湍流效应对光强起伏概率分布占主要作用,趋近于对数正态分布。
其他摘要	Based multi-phase screen numerical simulation, the influences of on-axis scintillation of focus Gaussian beams propagating in the turbulent atmosphere on several typical aberrations are investigated quantitatively. It is found that astigmatism and coma aberrations can restrain and promote the axis-scintillation to some extent, respectively. Stronger coma and astigmatism aberrations can forward and delay the appearance of scintillation saturation, respectively. The distribution of intensity deviates from log-normal distribution when turbulence strength is weaker. It is close to log-normal distribution when the intensity of turbulence rises. The skewness of the intensity distribution is less than zero and its kurtosis is greater than zero basically. Under weak or moderate turbulence intensity, the distribution of intensity fluctuation is always determined by aberrations when the aberration is big enough, however, the effects of turbulence play the main role on the distribution of intensity fluctuation and the aberrations mainly affect the fluctuation distributions of weak intensity areas when the weight of aberration is small. The strong turbulence influences the probability distribution of intensity fluctuation mostly, and the distribution fits to log-normal distribution approximately.
关键词	大气光学激光传输轴闪烁数值模拟像差湍流大气
收录类别	CSCD
语种	中文
CSCD记录号	CSCD:6122544
引用统计	被引频次：3[CSCD] [CSCD记录]
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/68754
专题	中国科学院合肥物质科学研究院
推荐引用方式 GB/T 7714	. 像差对聚焦高斯光束大气传输轴闪烁特性的影响[J]. 光学学报,2017,037.
APA	(2017).像差对聚焦高斯光束大气传输轴闪烁特性的影响.光学学报,037.
MLA	"像差对聚焦高斯光束大气传输轴闪烁特性的影响".光学学报 037(2017).