Study of the optimal duty cycle and pumping rate for square-wave amplitude-modulated Bell

Study of the optimal duty cycle and pumping rate for square-wave amplitude-modulated Bell–Bloom magnetometers

Wang Mei-Ling^{1, 2}, Wang Meng-Bing^{1, 2}, Zhang Gui-Ying^{1, 2}, Zhao Kai-Feng^{1, 2, †,}

The experimental field response signals of Faraday rotation and their fittings using Eq. (9). The pump light intensity is 4.2 mW. The black squares and red circles represent the data for duty cycles of 0.03% and 1.2%, respectively, the former is amplified by a factor of 12 for easy viewing. Blue dash lines represent the fittings.