Fig. 2: AC quadratures of nonlinear magneto-optical rotation (NMOR) signals as a function of the magnetic field amplitude. | Nature Communications

Fig. 2: AC quadratures of nonlinear magneto-optical rotation (NMOR) signals as a function of the magnetic field amplitude.

From: Machine learning assisted vector atomic magnetometry

Fig. 2: AC quadratures of nonlinear magneto-optical rotation (NMOR) signals as a function of the magnetic field amplitude.The alternative text for this image may have been generated using AI.

a Experimental NMOR signals versus the amplitude of a tilted magnetic field. The first harmonic signal and second harmonic signal is shown in a1 and a2 respectively. The laser is frequency modulated at 997 Hz, with a modulation range of 400 MHz. The center frequency of the laser is 200 MHz red-detuned from 87Rb D1 line, \(F=2\to {F}^{{\prime} }=1\) transition. The laser power is 20 μW. X is the in-phase signal and Y is the quadrature signal. b Theoretically calculated NMOR signals as a function of magnetic field. The first harmonic signal and second harmonic signal is shown in b1 and b2 respectively. In all figures, the red (blue) curve corresponds to the X(Y) signals and left (right) y-axis.

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