OSA's Digital Library

Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Editor: Henry M. Van Driel
  • Vol. 24, Iss. 7 — Jul. 1, 2007
  • pp: 1482–1489

All optical sensor for automated magnetometry based on coherent population trapping

J. Belfi, G. Bevilacqua, V. Biancalana, Y. Dancheva, and L. Moi  »View Author Affiliations

JOSA B, Vol. 24, Issue 7, pp. 1482-1489 (2007)

View Full Text Article

Enhanced HTML    Acrobat PDF (369 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



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 π 4 × ( 2.5 ) 2 × 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.

© 2007 Optical Society of America

OCIS Codes
(020.1670) Atomic and molecular physics : Coherent optical effects
(120.4640) Instrumentation, measurement, and metrology : Optical instruments
(300.6380) Spectroscopy : Spectroscopy, modulation

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: November 10, 2006
Revised Manuscript: February 23, 2007
Manuscript Accepted: March 14, 2007
Published: June 15, 2007

J. Belfi, G. Bevilacqua, V. Biancalana, Y. Dancheva, and L. Moi, "All optical sensor for automated magnetometry based on coherent population trapping," J. Opt. Soc. Am. B 24, 1482-1489 (2007)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. A. L. Bloom, "Principles of operation of the rubidium vapor magnetometer," Appl. Opt. 1, 61-68 (1962). [CrossRef]
  2. I. K. Kominis, T. W. Kornack, J. C. Allerd, and M. V. Romalis, "A subfemtotesla multichannel atomic magnetometer," Nature 422, 569-599 (2003). [CrossRef]
  3. V. Acosta, M. P. Ledbetter, S. M. Rochester, D. Budker, D. F. Kimball, D. C. Hovde, W. Gawlik, S. Pustelny, and J. Zachorowski, "Nonlinear magneto-optical rotation with frequency-modulated light in the geophysical field range," Phys. Rev. A 73, 053404 (2006). [CrossRef]
  4. G. Bison, R. Wynands, and A. Weis, "A laser-pumped magnetometer for the mapping of human cardio-magnetic fields," Appl. Phys. B 76, 325-328 (2003). [CrossRef]
  5. G. Bison, R. Wynands, and A. Weis, "Dynamical mapping of the human cardiomagnetic field with a room-temperature, laser-optical sensor," Opt. Express 11, 904-909 (2003). [CrossRef] [PubMed]
  6. G. Alzetta, A. Gozzini, L. Moi, and G. Orriols, "An experimental method for the observation of r.f. transitions and laser beat resonances in oriented Na vapors," Nuovo Cimento Soc. Ital. Fis. 36, 5-20 (1976). [CrossRef]
  7. E. Arimondo and G. Orriols, "Nonabsorbing atomic coherences by coherent two-photon transitions in a three-level optically pumping," Lett. Nuovo Cimento Soc. Ital. Fis. 17, 333-338 (1976). [CrossRef]
  8. M. Scully and M. Fleischhauer, "High-sensitivity magnetometer based on index-enhanced media," Phys. Rev. Lett. 69, 1360-1363 (1992). [CrossRef] [PubMed]
  9. M. Fleischhauer and M. Scully, "Quantum sensitivity limits of an optical magnetometer based on atomic phase coherence," Phys. Rev. A 49, 1973-1986 (1994). [CrossRef] [PubMed]
  10. J. E. Thomas, P. R. Hemmer, S. Ezekiel, C. C. Leiby, Jr., R. H. Picard, and C. R. Willis, "Observation of Ramsey fringes using a stimulated, resonance Raman transition in a sodium atomic beam," Phys. Rev. Lett. 48, 867-870 (1982). [CrossRef]
  11. P. Hemmer, M. Shahrair, H. Lamela-Rivera, S. Smith, B. Bernacki, and S. Ezekiel, "Semiconductor laser excitation of Ramsey fringes by using a Raman transition in a cesium atomic beam," J. Opt. Soc. Am. B 10, 1326-1329 (1993). [CrossRef]
  12. C. Caves, "Quantum-mechanical noise in an interferometer," Phys. Rev. D 23, 1693-1708 (1981). [CrossRef]
  13. S. Harris, "Lasers without inversion: interference of lifetime-broadened resonances," Phys. Rev. Lett. 62, 1033-1036 (1989). [CrossRef] [PubMed]
  14. O. Kocharovskaya, "Amplification and lasing without inversion," Phys. Rep. 219, 175-190 (1992). [CrossRef]
  15. C. Cohen-Tannoudji and W. Phillips, "New mechanism for laser cooling," Phys. Today 43, 33-40 (1990). [CrossRef]
  16. C. Affolderbach, M. Stähler, S. Knappe, and R. Wynands, "An all-optical, high-sensitivity magnetic gradiometer," Appl. Phys. B: Lasers and Optics 75, 605-612 (2002). [CrossRef]
  17. J. C. Allred, R. N. Lyman, T. W. Kornak, and M. V. Romalis, "High-sensitivity atomic magnetometer unaffected by spin-exchange relaxation," Phys. Rev. Lett. 89, 130801 (2002). [CrossRef] [PubMed]
  18. Ch. Andreeva, G. Bevilacqua, V. Biancalana, S. Cartaleva, Y. Dancheva, T. Karaulanov, C. Marinelli, E. Mariotti, and L. Moi, "Two-color coherent population trapping in a single Cs hyperfine transition, with application in magnetometry," Appl. Phys. B: Lasers and Optics 76, 667-675 (2003). [CrossRef]
  19. D. Budker, W. Gawlik, D. F. Kimball, M. Rochester, V. V. Yashchuk, and A. Weis, "Resonant nonlinear magneto-optical effects in atoms," Rev. Mod. Phys. 74, 1154-1201 (2002). [CrossRef]
  20. E. Arimondo, "Coherent population trapping in laser spectroscopy," Prog. Opt. 35, 257-354 (1996). [CrossRef]
  21. C. Cohen-Tannoudji, J. Dupon-Roc, and G. Grynberg, Atom-Photon Interaction (Wiley, 1992).
  22. http://magnetometer. fisica. unisi. it/lab.
  23. http://www.ingv. it/geomag/laquila. htm.

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited