N-type resonances excited in rubidium atoms confined in micrometric-thin cells with variable thickness from 1 μm to 2 mm are studied experimentally for the cases of a pure Rb atomic vapor and of a vapor with neon buffer gas. Good contrast and narrow linewidth were obtained for thicknesses as low as 30 μm. The higher amplitude and sharper profile of N-type resonances in the case of a buffered cell was exploited to study the splitting of the Rb85D1N-resonance in a magnetic field of up to 2200 G. The results are fully consistent with the theory. The mechanism responsible for forming N-resonances is discussed. Possible applications are addressed.
© 2012 Optical Society of America
Original Manuscript: July 13, 2012
Revised Manuscript: October 17, 2012
Manuscript Accepted: October 17, 2012
Published: November 22, 2012
Armen Sargsyan, Rafayel Mirzoyan, Aram Papoyan, and David Sarkisyan, "N-type resonances in a buffered micrometric Rb cell: splitting in a strong magnetic field," Opt. Lett. 37, 4871-4873 (2012)