I reinstalled the 2 inch sapphire (let'scall it C19.7#1) previously measured.

moved z_iu to 61.46 mm

z edges 24.8 and 36.8 mm ie z_center = 29.8mm

realigned DC at z_center

long z scan with lockin sensitivity 5mV and Pt = 4.78 +/-0.17 W

Wed, Feb 21, 2024 9-49-47 AM.txt

map with 0.5mm step, 15mm radius, lockin sensitivity = 20mV, Pt = 4.79 +/- 0.17 W

Wed, Feb 21, 2024 9-59-54 AM.txt