POXDC (i.e. POY DCout)
PRM misaligned: 70cnt
CA resonant PRMI: ~8000cnt (max)

REFLDC
PRMI antiresonant = 5200cnt
PRMI resonant = ~3000cnt
==> Visivility = 0.6

PRM
Transmissivity: T_R=0.0575, t_R=sqrt(T_R)

Rough estimation of the power recycling gain (assuming perfect mode matching)

P_{PRM_mialign} = P_in t_R²
P_{PRM_resonant} = P_in [t_R/(1-r_R r_MI)]²

G = t_R² P_{PRM_resonant} / P_{PRM_mialign} = 8000/70*0.0575 = 6.5

This is way too low compared with the design (G>40)
This corresponds to r_MI²=0.885 (loss of 10%) in the power recycling cavity.
But this yields visibility of 16%, instead of 60% which we saw. This is inconsistent.

If mode matching is not perfect, effective incident power of PRMI decreases
and this discrepancy may be explained

P_in = P_junk + (P_in-P_junk)

P_{PRM_mialign} = P_in t_R²
P_{PRM_resonant} = (P_in-P_junk) [t_R/(1-r_R r_MI)]²

P_{REFL_antires} ~ P_in
P_{REFL_resonant} = P_junk+(P_in-P_junk)[-r_R+(t_R² r_MI)/(1-r_R r_MI)]²

^===>

P_{PRM_resonant} / P_{PRM_mialign} = (1-R_mm) /(1-r_R r_MI)²=8000/70
P_{REFL_resonant} /P_{REFL_antires}= R_mm+(1-R_mm)[-r_R+(t_R² r_MI)/(1-r_R r_MI)]²=0.6

here R_mm= P_junk/P_in is the mode matching ratio

Solving the last two equations, we obtain

R_mm=0.6,
r_MI²= 0.939 (loss of 4-5%)

Can we believe that the mode matching is 60% and the loss is 5%???