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Relaxation of atomic polarization in paraffin-coated cesium vapor cells (13 pages)

Simon Rochester, Derek F. Jackson Kimball, M. T. Graf

Physical Review AJan 1, 20050 citations

Analysis of background gas in an alkali-metal vapor cell coated with paraffin

A. Hatakeyama, Takahiro Kuroda, Naota Sekiguchi +1 more

Applied Physics BJun 25, 20198 citations

Diffusion of Rb atoms in paraffin-coated resonant vapor cells

Sergey Nikitich Atutov, Fedor A. Benimetskiy, Alexander Ivanovich Plekhanov +2 more

arXiv:1605.04658The European Physical Journal DJan 1, 201712 citations

Slow and stored light in paraffin-coated Rb vapor cells

Mason Klein, Michael Hohensee, Yanhong Xiao +3 more

Bulletin of the American Physical SocietyJun 9, 20070 citations

A large sample study of spin relaxation and magnetometric sensitivity of paraffin-coated Cs vapor cells

N. Castagna, G. Bison, Giovanni Di Domenico +5 more

Abstract We have manufactured more than 250 nominally identical paraffin-coated Cs vapor cells (30 mm diameter bulbs) for multi-channel atomic magnetometer applications. We describe our dedicated cell characterization apparatus. For each cell we have determined the intrinsic longitudinal, Γ01, and transverse, Γ02, relaxation rates. Our best cell shows Γ01/2π ≈ 0.5 Hz, and Γ02/2π ≈ 2 Hz. We find a strong correlation of both relaxation rates which we explain in terms of reservoir and spin exchange relaxation. For each cell we have determined the optimal combination of rf and laser powers which yield the highest sensitivity to magnetic field changes. Out of all produced cells, 90 % are found to have magnetometric sensitivities in the range of 9 to 30 fT / √ Hz. Noise analysis shows that the magnetometers operated with such cells have a sensitivity close to the fundamental photon shot noise limit. 1Abstract We have manufactured more than 250 nominally identical paraffin-coated Cs vapor cells (30 mm diameter bulbs) for multi-channel atomic magnetometer applications. We describe our dedicated cell characterization apparatus. For each cell we have determined the intrinsic longitudinal, Γ01, and transverse, Γ02, relaxation rates. Our best cell shows Γ01/2π ≈ 0.5 Hz, and Γ02/2π ≈ 2 Hz. We find a strong correlation of both relaxation rates which we explain in terms of reservoir and spin exchange relaxation. For each cell we have determined the optimal combination of rf and laser powers which yield the highest sensitivity to magnetic field changes. Out of all produced cells, 90 % are found to have magnetometric sensitivities in the range of 9 to 30 fT / √ Hz. Noise analysis shows that the magnetometers operated with such cells have a sensitivity close to the fundamental photon shot noise limit. 1

Nov 10, 200964 citations

Magnetometric sensitivity optimization for nonlinear optical rotation with frequency-modulated light: Rubidium D2 line

Derek F. Jackson Kimball, Louis Jacome, Srikanth Guttikonda +2 more

Atomic spin polarization of alkali atoms in the ground-state can survive thousands of collisions with paraffin-coated cell walls. The resulting long spin-relaxation times achieved in evacuated, paraffin-coated cells enable precise measurement of atomic spin precession and energy shifts of ground-state Zeeman sublevels. In the present work, nonlinear magneto-optical rotation with frequency-modulated light (FM NMOR) is used to measure magnetic field-induced spin precession for rubidium atoms contained in a paraffin-coated cell. The magnetometric sensitivity of FM NMOR for the rubidium D2 line is studied as a function of light power, detuning, frequency-modulation amplitude, and rubidium vapor density. For a 5-cm-diameter cell at temperature T≈35 °C, the optimal shot-noise-projected magnetometric sensitivity is found to be 2×10−11 G/Hz (corresponding to a sensitivity to spin precession frequency of ≈10 μHz/Hz or a sensitivity to Zeeman sublevel shifts of ≈4×10−20 eV/Hz).Atomic spin polarization of alkali atoms in the ground-state can survive thousands of collisions with paraffin-coated cell walls. The resulting long spin-relaxation times achieved in evacuated, paraffin-coated cells enable precise measurement of atomic spin precession and energy shifts of ground-state Zeeman sublevels. In the present work, nonlinear magneto-optical rotation with frequency-modulated light (FM NMOR) is used to measure magnetic field-induced spin precession for rubidium atoms contained in a paraffin-coated cell. The magnetometric sensitivity of FM NMOR for the rubidium D2 line is studied as a function of light power, detuning, frequency-modulation amplitude, and rubidium vapor density. For a 5-cm-diameter cell at temperature T≈35 °C, the optimal shot-noise-projected magnetometric sensitivity is found to be 2×10−11 G/Hz (corresponding to a sensitivity to spin precession frequency of ≈10 μHz/Hz or a sensitivity to Zeeman sublevel shifts of ≈4×10−20 eV/Hz).

arXiv:0906.3586Journal of Applied PhysicsSep 15, 200932 citations

A large sample study of spin relaxation and magnetometric sensitivity of paraffin-coated Cs vapor cells

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A large sample study of spin relaxation and magnetometric sensitivity of paraffin-coated Cs vapor cells

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