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Published on: March 30, 2017
Conversion of laser-frequency noise to optical-rotation noise in cesium vapor
Ricardo Jiménez-Martínez1, Svenja Knappe, W Clark Griffith
1Time and Frequency Division, National Institute of Standards and Technology, Boulder, Colorado 80305, USA. jimenezm@nist.gov
Abstract:
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.
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