ADDA problem with slim objects

[Shuyu Wei]

Hi,
I'm trying to use holopy as  a wrapper of ADDA to calculate holograms. It works great with a single sphere. However when I calculate holograms of slim objects like ellipsoids, the result looks weired.

This is a hologram of a sphere with r = 1um, n=1.4, z=40um generated by ADDA:

This is a hologram of an ellipsoid with r=(4,1,1), generated by ADDA :

This is a hologram of a bacteria aquired from experiment:

As you can see, ADDA generates strange result with wrong pattern and very high intensity value.

When I define a sphere using ellipsoid with r=(1,1,1), the result is good.

I tried other ADDA built-in geometries, they all generate similar results when width/height rate is high.

I also tried ADDA version 1.3b4 and 1.2, the results are the same.

So is this a bug of adda or holopy?

Or how can I correctly calculate the hologram of such objects?