Figure 4From: Dynamic Fabry-Pérot cavity stabilization technique for atom-cavity experimentsPDH error signal to lock the cavity. Inset is the oscilloscope trace of a locked signal. Cavity is scanned across the resonance of the 767 nm reference laser to obtain the standard PDH error signal (red curve) from the dip in the reflected intensity. The inset graph (blue curve) shows the oscilloscope trace of a locked signalBack to article page