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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Vol. 22, Iss. 6 — Jun. 1, 2005
  • pp: 1325–1329

Magnetic induced dichroism and frequency stabilization of violet-blue diode lasers on gallium atomic transitions

Barbara Fazio, Onofrio M. Maragó, and Maurizio Musso  »View Author Affiliations

JOSA B, Vol. 22, Issue 6, pp. 1325-1329 (2005)

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We study the magnetic-field-induced dichroism on a sample of gallium neutral atoms created in a hollow cathode lamp and describe a method for robust stabilization of violet-blue diode lasers tuned on gallium atomic transitions for an atom nanofabrication experiment. We compare the experimental dichroic signals with theoretical simulations obtained by the solving of the exact atom-field interaction Hamiltonian. We find excellent agreement when considering the magnetic field shielding from the hollow cathode. This method allows for a wide range of frequency tuning, modulation-free locking, and long-term stability of external-cavity diode lasers. From analysis of a square root Allan variance we have achieved a stability of 1 MHz at 1-s average time.

© 2005 Optical Society of America

OCIS Codes
(020.7490) Atomic and molecular physics : Zeeman effect
(300.6210) Spectroscopy : Spectroscopy, atomic
(300.6260) Spectroscopy : Spectroscopy, diode lasers

Barbara Fazio, Onofrio M. Maragó, and Maurizio Musso, "Magnetic induced dichroism and frequency stabilization of violet-blue diode lasers on gallium atomic transitions," J. Opt. Soc. Am. B 22, 1325-1329 (2005)

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