The 0th-order AOM output is stabilized by servoing the 1st-order beam against a sampled input beam, reaching 4e-6 Hz^-1/2 relative power noise at 1e-4 Hz and 3.28e-6 Allan deviation at 500 s.
Within the averaging time 1 to 30 s (with respect to a bit RPN increasing at the 0.03-0.1 Hz frequency range), there is some notable deterioration of the Allan devia- tion
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Laser power stabilization using conservation law in acoustic optic modulator
The 0th-order AOM output is stabilized by servoing the 1st-order beam against a sampled input beam, reaching 4e-6 Hz^-1/2 relative power noise at 1e-4 Hz and 3.28e-6 Allan deviation at 500 s.