(Alexa, Daniel)

We went on ISCT1 to install a new interference path to measure the difference between the PSL sampler beam and the POP beam. This will allow us to measure the path length variations on the input path relative to the green path.

We installed a new 50:50 beamsplitter in the rejected beam of the first dichroic after the SHG. This picks of the red beam coming from the PSL (and some left-over green).  Next, we added a new beam path from the POP beam to the other input port of the beampslitter. Currently, there is no detector and all beams are dumped. The 50:50 splitter in the POP path is still missing as well.

We readjusted the green beam path coming from the PSL to eliminate the clipping on the cube polarizer.