Sensitive optical atomic magnetometer based on nonlinear magneto-optical rotation

Hovde, Chris; Patton, Brian; Corsini, Eric; Higbie, James; Budker, Dmitry

doi:10.1117/12.850302

Cited by 5 publications

(5 citation statements)

References 9 publications

(10 reference statements)

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“…The blue line corresponds to a sinusoidal curve fitted to the data with an amplitude of 1.6 Hz. This corresponds to a magnetic field of 0.46 nT, what is about the same magnitude compared to other setups[33].…”

mentioning

confidence: 59%

“…The alignment of the magnetometer setup with respect to the magnetic field can be controlled from outside the shielding by a cable pull. This setup is somehow comparable to one presented earlier, where the OPM is rotated in the Earth's magnetic field [33], but it excludes external interferences and is variable in the magnetic field strength.…”

Section: Measurement Setupmentioning

confidence: 77%

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Sources of heading errors in optically pumped magnetometers operated in the Earth's magnetic field

et al. 2019

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When optically pumped magnetometers are aimed for the use in Earth's magnetic field, the orientation of the sensor to the field direction is of special importance to achieve accurate measurement result. Measurement errors and inaccuracies related to the heading of the sensor can be an even more severe problem in the case of special operational configurations, such as for example the use of strong off-resonant pumping. We systematically study the main contributions to the heading error in systems that promise high magnetic field resolutions at Earth's magnetic field strengths, namely the non-linear Zeeman splitting and the orientation dependent light shift. The good correspondence of our theoretical analysis to experimental data demonstrates that both of these effects are related to a heading dependent modification of the interaction between the laser light and the dipole moment of the atoms. Also, our results promise a compensation of both effects using a combination of clockwise and counter clockwise circular polarization.

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confidence: 59%

Section: Measurement Setupmentioning

confidence: 77%

Sources of heading errors in optically pumped magnetometers operated in the Earth's magnetic field

et al. 2019

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“…原子磁力仪是近年出现的高灵敏度弱磁场检测装置，不仅可用于传统的磁测量领域如地质调查、油气和矿产资源勘察、考古、金属材料无损检测、空间探测、医学领域的心磁和脑磁测量、军事领域的磁异常探测和地磁匹配导航，还可研究物理学中的基本对称性 [1][2][3] 。其基本原理是利用线偏振光检测被极化的原子在磁场中的拉莫进动频率 [4] 。目前已经利用非线性磁光旋转(NMOR)效应 [5] 、相干布居囚禁(CPT)技术 [6] 、无自旋交换弛豫(SERF)效应实现了高灵敏度原子磁力仪 [7] ，测磁灵敏度已经优于超导磁力仪，达到 0.16 fT/Hz 1/2 [8] ，并且其结构简单，更易于小型化 [9][10]…”

Section: 引言unclassified

Influence of Pump Light Frequency on the Sensitivity of All-Optical Cs Atomic Magnetometer

Qiang¹,

Yannan²,

Yudan³

et al. 2014

激光与光电子学进展

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All-optical atomic magnetometer with high sensitivity is an important technique to detect weak magnetic field. The Cs vapor cell is the core component of the atomic magnetometer. He gas is used as buffer to reduce diffusion to the walls where spin coherence is rapidly lost. The buffer gas decides the pump light frequency. In this work, we analyze the principle of all-optical Cs atomic magnetometer and the influence of pump light frequency on the sensitivity of all-optical Cs atomic magnetometer as the buffer gas pressure is about 1.333×10 4 Pa. Rate equation is used to calculate the orientation of the atomic spin for different pump light frequency. The result shows that the maximum sensitivity appears as the pump light frequency and the probe light frequency are locked to Cs D1 transition F = 3 → F′ = 4 and Cs D2 transition F = 4 → F′ = 5，respectively.

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“…Already, the DAVLL system has proven to be a reliable, compact component of a portable magnetometer 15 (Fig. 11).…”

Section: Smaller Systemsmentioning

confidence: 99%

Small-sized dichroic atomic vapor laser lock

Lee

Iwata

Corsini

et al. 2011

Review of Scientific Instruments

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Two, lightweight diode laser frequency stabilization systems designed for experiments in the field are described. A significant reduction in size and weight in both models supports the further miniaturization of measurement devices in the field. Similar to a previous design, magnetic-field lines are contained within a magnetic shield enclosing permanent magnets and a Rb cell, so that these DAVLL systems may be used for magnetically sensitive instruments. The Mini-DAVLL system (49 mm long) uses a vapor cell (20 mm long), and does not require cell heaters. An even smaller Micro-DAVLL system (9mm long) uses a micro-fabricated cell (3 mm square), and requires heaters. These new systems show no degradation in performance with regard to previous designs, while considerably reducing dimensions.PACS numbers: 07.55. Ge, 32.60.+i, 85.70.Sq a) These authors have contributed equally to this work.

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Sensitive optical atomic magnetometer based on nonlinear magneto-optical rotation

Cited by 5 publications

References 9 publications

Sources of heading errors in optically pumped magnetometers operated in the Earth's magnetic field

Sources of heading errors in optically pumped magnetometers operated in the Earth's magnetic field

Influence of Pump Light Frequency on the Sensitivity of All-Optical Cs Atomic Magnetometer

Small-sized dichroic atomic vapor laser lock

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