کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1541920 | 996700 | 2007 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Angle-of-arrival variance’s dependence on the aperture size for indoor convective turbulence Angle-of-arrival variance’s dependence on the aperture size for indoor convective turbulence](/preview/png/1541920.png)
We analyze the angle-of-arrival variance of an expanded and collimated laser beam once it has traveled through an indoor convective turbulence. A continuous position detector is set at the focus of a lens collecting the laser beam. The effect of the different turbulent scales, between the inner and the outer scales, is studied by changing the diameter of a circular pupil before the collector lens. The experimental optical setup follows the design introduced by Masciadri and Vernin [Appl. Opt., 36(6) (1997) 1320]. Tilt data measurements are studied using the fractional Brownian motion model for the turbulent wave-front phase introduced in a previous paper [Pérez et al., J. Opt. Soc. Am. A 21(10) (2004) 1962]. The Hurst exponents associated to different strengths of turbulence are obtained from the here proposed D2H−2 dependence.
Journal: Optics Communications - Volume 277, Issue 2, 15 September 2007, Pages 241–246