Conversion of laser-frequency noise to optical-rotation noise in cesium vapor.
We have studied the noise in the optical rotation of a linearly polarized laser beam transmitted through a spin-polarized (133)Cs 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.
Jiménez-Martínez
Ricardo
R
Time and Frequency Division, National Institute of Standards and Technology, Boulder, Colorado 80305, USA. jimenezm@nist.gov
Knappe
Svenja
S
Griffith
W Clark
WC
Kitching
John
J