Fig. 6: Sensitivity and bandwidth of the magnetometer.
From: Metasurface-integrated elliptically polarized laser-pumped SERF magnetometers
a The blue and red lines represent the sensitivities of the SERF magnetometer for the traditional waveplate and metasurface, respectively. b Frequency response of the 100 pT rms calibrated magnetic field at frequencies of 1–100 Hz and the fitting curve. c Four-hour test of the magnetometer sensitivity at 30 Hz. The red line at 10.61 fT/Hz1/2 represents the average sensitivity
