Sensitive optical atomic magnetometer based on nonlinear magneto-optical rotation

机译：基于非线性磁光旋转的灵敏光学原子磁力计

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A self-oscillating magnetometer based on nonlinear magneto-optical rotation using amplitude-modulated pump light and unmodulated probe light (AM-NMOR) in ~(87)Rb has been constructed and tested towards a goal of airborne detection of magnetic anomalies. In AM-NMOR, stroboscopic optical pumping via amplitude modulation of the pump beam creates alignment of the ground electronic state of the rubidium atoms. The Larmor precession causes an ac rotation of the polarization of a separate probe beam; the polarization rotation frequency provides a measure of the magnetic field. An anti-relaxation coating on the walls of the atomic vapor cell results in a long lifetime of 56 ms for the alignment, which enables precise measurement of the precession frequency. Light is delivered to the magnetometer by polarization-maintaining optical fibers. Tests of the sensitivity include directly measuring the beat frequency between the magnetometer and a commercial instrument and measurements of Earth's field under magnetically quiet conditions, indicating a sensitivity of at least 5 pT/√/Hz. Rotating the sensor indicates a heading error of less than 1 nT, limited in part by residual magnetism of the sensor.

机译：基于〜（87）Rb中的振幅调制泵浦光和未调制探测光（AM-NMOR），基于非线性磁光旋转的自激磁强计已被构建并测试，以实现机载探测磁异常的目标。在AM-NMOR中，通过泵浦光束的幅度调制进行频闪光学泵浦会导致the原子的基态电子状态对准。拉莫尔进动使分离的探测光束的偏振产生ac旋转；极化旋转频率提供了磁场的量度。原子蒸气室壁上的抗松弛涂层可延长56 ms的对准寿命，从而可以精确测量进动频率。光通过保偏光纤传送到磁力计。灵敏度的测试包括直接测量磁力计和商用仪器之间的拍频，以及在磁性安静条件下测量地磁场，表明灵敏度至少为5 pT /√/ Hz。旋转传感器表示航向误差小于1 nT，部分受传感器的剩磁限制。

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来源
《Unattended ground, sea, and air sensor technologies and applications XII》|2010年|P.769313.1-769313.10|共10页
会议地点 Orlando FL(US)
作者
Chris Hovde; rnBrian Patton; rnEric Corsini; rnJames Higbie; rnDmitry Budker;
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作者单位

Southwest Sciences Ohio Operations, 6837 Main Street, Cincinnati OH 45244;

rnUniversity of California, Dept. of Physics, 273 Birge Hall, Berkeley CA 94720;

rnUniversity of California, Dept. of Physics, 273 Birge Hall, Berkeley CA 94720;

rnBucknell University, Dept. of Physics and Astronomy, 174 Olin Science, Lewisburg, PA 17837;

rnUniversity of California, Dept. of Physics, 273 Birge Hall, Berkeley CA 94720;

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原文格式 PDF
正文语种 eng
中图分类 TP212;
关键词
atomic magnetometer; heading error; diode laser; coherence;

机译：原子磁力计航向误差二极管激光器连贯性;

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专利

1. Sensitive magnetometry based on nonlinear magneto-optical rotation - art. no. 043403 [J] . Budker D., Rochester SM., Yashchuk VV., Physical Review, A. Atomic, molecular, and optical physics . 2000,第4期

机译：基于非线性磁光旋转的灵敏磁力测量-艺术。没有。 043403
2. Nonlinear magneto-optical rotation narrowing in vacuum gas cells due to interference between atomic dark states of two spatially separated laser beams [J] . M. M. Mijailovic, Z. D. Grujic, M. Radonjic, Physical Review, A. Atomic, molecular, and optical physics . 2009,第5aPta2期

机译：由于两个空间分离的激光束的原子暗态之间的干扰，真空气室中的非线性磁光旋转变窄
3. Atomic noise spectra in nonlinear magneto-optical rotation in a rubidium vapor [J] . Li HB, Sautenkov VA, Varzhapetyan TS, Journal of the Optical Society of America, B. Optical Physics . 2008,第10期

机译：nonlinear蒸气中非线性磁光旋转中的原子噪声谱
4. Sensitive optical atomic magnetometer based on nonlinear magneto-optical rotation [C] . Chris Hovde, Brian Patton, Eric Corsini, SPIE Conference on Unattended Ground, Sea, and Air Sensor Technologies and Applications . 2010

机译：基于非线性磁光旋转的敏感光学原子仪
5. Nonlinear magneto-optical rotation with frequency-modulated light. [D] . Kimball, Derek Forrest. 2005

机译：调频光的非线性磁光旋转。
6. Enhanced nonlinear magneto-optical rotation in cold atoms: A theoretical study [O] . Mohsen Ghaderi Goran Abad, Mitra Valinezhad, Mohammad Mahmoudi -1

机译：冷原子中增强的非线性磁光旋转：理论研究
7. Sensitive optical atomic magnetometer based on nonlinear magneto-optical rotation [O] . Hovde, Chris, Patton, Brian, Corsini, Eric, 2010

机译：基于非线性磁光的灵敏光学原子磁力仪回转

Sensitive optical atomic magnetometer based on nonlinear magneto-optical rotation

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