Superradiant Raman Laser Magnetometer
Atomic Physics
2015-06-11 v1 Quantum Physics
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.
Cite
@article{arxiv.1210.3663,
title = {Superradiant Raman Laser Magnetometer},
author = {Joshua M. Weiner and Kevin C. Cox and Justin G. Bohnet and Zilong Chen and James K. Thompson},
journal= {arXiv preprint arXiv:1210.3663},
year = {2015}
}
Comments
5 pages, 4 figures