I am trying to align the TEM00 beam to the folded cavity.
In order to do that I am modifiying the beam path which allows us to align with 2 STMs which have some amount of separation distance.

Since a mount for folded cavity has not been delivered yet, I cannot clapm the cavity which withdraws me to play with silicon mirror.
So I am using tentative mirrors.

Tomorrow I will measure the beam profile and tweak the mode matching and consider about the output layout.