Fig. 5: Displacement readout system for the optomechanical resonator. | Communications Physics

Fig. 5: Displacement readout system for the optomechanical resonator.

From: Optomechanical resonator-enhanced atom interferometry

Fig. 5: Displacement readout system for the optomechanical resonator.The alt text for this image may have been generated using AI.

Laser light split off for intensity noise correction and light reflected back from the optomechanical resonator (OMR) are detected on photo diodes (PD 1 & 2). Both signals are passed to current-to-voltage converters (I/V) followed by high-pass filters (HPF) at 0.8 Hz and are subsequently enhanced by amplifiers (Amp). Finally, the difference signal is digitally low-pass filtered (LPF) at 50 Hz.

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