As Eleonora pointed out we used a wrong datasheet for the EOM (and also did some wrong calculations for the max beam size inside the EOM...)

Here is the good size range : between 300 and 80 um

We designed a new telescope (Fig1) as the following : f=125mm lens and 10cm after f=-25mm lens.

This should allow to have a beam size around 200um inside the EOM.

Question : For the green EOM, the astigmatism depended a lot on the lens position.

Is the astigmatism also that problematic? We will have quite a short beam path until the OPO.

Anyway, we found 2 trails on which we can translate the lenses borrowed from Manuel's experiment.

Fig 2 : beam size before the EOM

The beam didn't seem to be too much astigmatic after the EOM (posted soon)