光学学报, 2002, 22 (1): 36, 网络出版: 2006-08-08
激光大气闪烁饱和的孔径平均效应 
下载： 593次
Aperture Averaging of Saturated Scintillation of Laser Propagation in the Atmosphere
摘要
理论分析了湍流介质中一定孔径内光强起伏(闪烁)的频谱特征,在6.8 km的大气传播距离上同时测量了激光在针孔和??260 mm孔径内的闪烁,根据两者功率谱特征的对比分析结果以及两者闪烁均方差间的关系,指出孔径平均效应可以在一定程度上消除激光大气闪烁的饱和效应,从而可以利用孔径平均效应在临界强起伏条件下测量湍流强度.
Abstract
The characteristics of the temporal spectrum of optical scintillation in a finite aperture in the turbulent atmosphere are analyzed theoretically. Experiments of laser scintillation in a pinhole and a 260 mm aperture were carried out along a 6.8 km propagation path. Comparisons of scintillation spectra and standard deviations are made between those for the pinhole and the 260 mm aperture. It can be concluded that the aperture averaging can be saturation-resistant for the saturation to some extent. This provides a foundation for measuring optical turbulence intensity using scintillation in a finite aperture.
饶瑞中, 龚知本, 王世鹏, 刘晓春, 汪建业, 周毅. 激光大气闪烁饱和的孔径平均效应[J]. 光学学报, 2002, 22(1): 36. 饶瑞中, 龚知本, 王世鹏, 刘晓春, 汪建业, 周毅. Aperture Averaging of Saturated Scintillation of Laser Propagation in the Atmosphere[J]. Acta Optica Sinica, 2002, 22(1): 36.
PDF全文
