Austin ran a CHARD_Y injection while we were waiting for the violin modes to be damped. The measurement could be improved at high frequency, but it's a good start. See attached plots and the fit in s-domain below of the optics plus suspension (plant)

z = [-1.89361201+5.8381431j , -1.89361201-5.8381431j ,
        -0.09640395+5.84691435j, -0.09640395-5.84691435j,
         3.20330258+4.44616445j,  3.20330258-4.44616445j,
        -0.15279235+1.84732571j, -0.15279235-1.84732571j,
        -1.26520672+0.j        , -0.02927838+0.43904034j,
        -0.02927838-0.43904034j, -0.26944611+0.j        ]
p = [-0.14766306+5.84793096j, -0.14766306-5.84793096j,
        -3.04921633+0.j        , -0.21088202+2.7609525j ,
        -0.21088202-2.7609525j , -0.07400573+2.48088453j,
        -0.07400573-2.48088453j, -0.03291084+1.03014283j,
        -0.03291084-1.03014283j, -0.0342948 +0.4742311j ,
        -0.0342948 -0.4742311j , -0.02178038+0.j        ]
k = -307334.1901230435)