Is there a problem with this set of plots?

[Spinnor]

Consider a graphic from May 2004 Physics Today article, Light's orbital angular momentum.

Note that for larger l, the "hole" in the beam in the 2nd column gets bigger but the "hole" in the 3rd column basically stays the same size. I would think that both "holes" should grow with increasing l?

Thanks!

 

[Spinnor]

If you measure the holes in the 3rd column they do seem to get bigger.