Lena/Nov 2016: Difference between revisions

 

Measured how the magnetic field change depends on the optical frequency of the pump laser. The pump current is modulated with a sum of two waveforms - 0.1 Hz ramp that sweeps through the optical frequency, and 38 Hz harmonic modulation that changed the optical frequency by 1 GHz. We connected the magnetometer signal to the lock-in to see how both phase and amplitude depend on the optical frequency.