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Conversion of laser optical rotation noise in cesium vapor



Ricardo Jimenez Martinez, Svenja A. Knappe, William C. Griffith, John E. Kitching


We have studied the noise in the optical rotation of a linearly polarized laser beam transmitted through a spin-polarized 133Cs vapor as a function of its frequency detuning from the optical resonance. Our measurements demonstrate the direct conversion of the laser frequency noise into optical rotation noise by the dispersive response of the atomic vapor. We describe this noise conversion process in terms of a simple model that can be used to optimize the performance of atomic devices, such as atomic magnetometers, that use optical rotation as their operational signal.
Optics Letters


laser FM noise, chip-scale atomic magnetometer, optical rotation, vertical-cavity surface-emitting laser (VCSEL)
Created August 15, 2009, Updated February 19, 2017