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arXiv · 1210.3663

Superradiant Raman Laser Magnetometer

Joshua M. Weiner·Kevin C. Cox·Justin G. Bohnet·Zilong Chen·James K. Thompson
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Abstract

We demonstrate a proof-of-principle magnetometer that relies on the active oscillation of a cold atom Raman laser to continuously map a field-sensitive atomic phase onto the phase of the radiated light. We demonstrate wideband sensitivity during continuous active oscillation, as well as narrowband sensitivity in passive Ramsey-like mode with translation of the narrowband detection in frequency using spin-echo techniques. The sensor operates with a sensitivity of 190 pT/Hz^(1/2) at 1 kHz and effective sensing volume of 2 * 10^-3 mm^3. Fundamental quantum limits on the magnetic field sensitivity of an ideal detector are also considered.

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Joshua M. Weiner, Kevin C. Cox, Justin G. Bohnet, Zilong Chen, James K. Thompson. 2012-10-13. Superradiant Raman Laser Magnetometer. https://doi.org/10.1063/1.4773241

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