Figure 7
From: Airborne quantum key distribution with boundary layer effects
![Figure 7](http://media.springernature.com/full/springer-static/image/art%3A10.1140%2Fepjqt%2Fs40507-021-00115-w/MediaObjects/40507_2021_115_Fig7_HTML.png)
(a)-(c) show the intensity distribution of the beam propagated without the boundary layer effects. (d)-(f) show the intensity distribution of the beam propagated through the boundary layer. Here \(\alpha =10^{\circ },30^{\circ },50^{\circ }\), and the unit of axis is meters