| I've run a few plots of observed squeezing in the LIGO interferometer to fully ensure that the point we have selected is the optimal point for squeezing. Contrary to what I expected, there seems to be much more degenerate "optimal" configurations. While the toroidal case may be near optimal, it seems that the solution we found for a non astigmatic beam is not the only one. I will further explore this space to find more optimal/tolerant positions, which I see evidence of.
Additionally, as observed squeezing is computational expensive to compute, I found that the difference in round-trip gouy phase accumulation between the x and y planes is a good approximation for an optimal squeezing state, which I believe makes physical sense. This may be helpful to quickly compute other optimal conditions. |