All optical automated magnetic field monitoring based on coherent population trapping produced by a frequency-modulated diode laser

J. Belfi; G. Bevilacqua; V. Biancalana; Y. Dancheva; L. Moi

doi:10.1117/12.726807

5 March 2007 All optical automated magnetic field monitoring based on coherent population trapping produced by a frequency-modulated diode laser

J. Belfi, G. Bevilacqua, V. Biancalana, Y. Dancheva, L. Moi

Author Affiliations +

Proceedings Volume 6604, 14th International School on Quantum Electronics: Laser Physics and Applications; 66040A (2007) https://doi.org/10.1117/12.726807
Event: 14th International School on Quantum Electronics: Laser Physics and Applications, 2006, Sunny Beach, Bulgaria

Abstract

A fully 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) effect produced by a multi-frequency excitation. It has an all optical sensor connected only by an optical fiber to the laser head. This allows truly remote sensing and minimization of the field perturbation. The CPT resonance is observed when a frequency comb, generated by a diode laser current modulation, excites a sample of Cs atoms confined in a cell with 2 Torr of buffer gas. In differential sensor configuration, allowing for common-mode noise cancellation, the sensitivity of 45pT/square root of Hz is obtained.

Citation Download Citation

J. Belfi, G. Bevilacqua, V. Biancalana, Y. Dancheva, and L. Moi "All optical automated magnetic field monitoring based on coherent population trapping produced by a frequency-modulated diode laser", Proc. SPIE 6604, 14th International School on Quantum Electronics: Laser Physics and Applications, 66040A (5 March 2007); https://doi.org/10.1117/12.726807

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available