All optical sensor for automated magnetometry based on coherent population trapping

被引：34

作者：

Belfi, J. ^{[1
]}

Bevilacqua, G. ^{[1
]}

Biancalana, V. ^{[1
]}

Dancheva, Y. ^{[1
]}

Moi, L. ^{[1
]}

机构：

[1] Univ Siena, Dipartimento Fis, CNISM, Unita Siena, I-53100 Siena, Italy

来源：

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 2007年 / 24卷 / 07期

关键词：

D O I：

10.1364/JOSAB.24.001482

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

An automated magnetometer suitable for long lasting measurement under stable and controllable experimental conditions has been implemented. The device is based on coherent population trapping (CPT) produced by a multifrequency excitation. CPT resonance is observed when a frequency comb, generated by diode laser current modulation, excites Cs atoms confined in a pi/4 X(2.5)(2) x 1 cm(3), 2 Torr N-2 buffered cell. A fully optical sensor is connected through an optical fiber to the laser head allowing for truly remote sensing and minimization of the field perturbation. A detailed analysis of the CPT resonance parameters as a function of the optical detuning has been made in order to get high sensitivity measurements. The magnetic field monitoring performances and the best sensitivity obtained in a balanced differential configuration of the sensor are presented. (c) 2007 Optical Society of America.

引用

页码：1482 / 1489

页数：8

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