we mesure the power at LB_M9 (neoVAN output), at LB_M11 (AOM output) with and witout the block "L/2 - Brewster polar - L/2" right before the AOM).
we deduce:
• T(L/2, Brewster, L/2 ) = 1,5 W / 89,3 W = 1,68 %
• T(LB_M9 to AOM_output) = 3.8 W / 91.6 W = 4,1 %
• P_PMC_REFL (unlocked) / P_AOM_output= 86,07 / 88,3 = 0,975
we assume that, once unlocked, the PMC should reflect all the incident power (assuming that the transmission is negligeable, which it was in our measurement). Therefore we don't need to consider the Transmission coeff of the input PMC mirror (~2,5 %) in the power balance sheet.