The new optic layout is done. There are some changes from the previous version.

Some notes and concerns about the new layout:

• I made sure that the beam size in all EOMs, EAOMs are in the right size (diameter ~ 250 - 500 um) to avoid any clipping/ diffraction.
• Due to the small waist size of the new cavities and the long path between the cavity and the vacuum window. The beamsize on the input optic is quite large (almost 3mm). I'll have to check if the beam spiltter is large enough.
• I assume that the beam size from the new PMC (the setup on the left) is 370um. It might change because the design for the PMC is not settled yet, but the spacer is enough for mode matching.
• I add a beam splitter in the setup just before the vacuum window. This can be used for RFAM pickup or fiber distribution. It can be done in the future.
• a set of flip mirrors are added, for scanning two cavities with one laser. The mode match should be good enough to get TEM00 in the 2nd cavity.