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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry M. Van Driel
  • Vol. 24, Iss. 8 — Aug. 1, 2007
  • pp: 1829–1838

Electromagnetically induced transparency: the thickness of the vapor column is of the order of a light wavelength

Y. Pashayan-Leroy, C. Leroy, A. Sargsyan, A. Papoyan, and D. Sarkisyan  »View Author Affiliations


JOSA B, Vol. 24, Issue 8, pp. 1829-1838 (2007)
http://dx.doi.org/10.1364/JOSAB.24.001829


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Abstract

Electromagnetically induced transparency (EIT) effect has been studied using an extremely thin cell (ETC) with the thickness of an Rb vapor column of the order of light wavelength λ ( 780 nm ) and varying in the range of 0.5 λ 2.5 λ . Λ-systems on the D 2 line of Rb 85 and Rb 87 have been studied experimentally. Along with EIT resonance, we study the peculiarities of velocity-selective optical pumping/saturation (VSOP) resonances, which accompany the EIT resonance and, as a rule, are spectrally broader. It is demonstrated that size-conditioned strongly anisotropic contribution of atoms with different velocities in an ETC causes several dramatic differences of the EIT and VSOP resonances formation in the ETC as compared with an ordinary 1 10 cm long cell. Particularly, in the case of the ETC, the EIT linewidth and contrast dramatically depend on the coupling laser detuning from the exact atomic transition. A theoretical model taking into account the peculiarities of transmission spectra when L = n λ and L = ( 2 n + 1 ) λ 2 (n is an integer) has been developed. The experimental transmission spectra are well described by the theoretical model developed. The possibility of EIT resonance formation when atomic column thickness is of the order of L = 0.5 λ and less is theoretically predicted.

© 2007 Optical Society of America

OCIS Codes
(020.1670) Atomic and molecular physics : Coherent optical effects
(020.2930) Atomic and molecular physics : Hyperfine structure
(020.3690) Atomic and molecular physics : Line shapes and shifts
(300.6360) Spectroscopy : Spectroscopy, laser

ToC Category:
Atomic and Molecular Physics

History
Original Manuscript: November 28, 2006
Revised Manuscript: March 12, 2007
Manuscript Accepted: April 19, 2007
Published: July 19, 2007

Citation
Y. Pashayan-Leroy, C. Leroy, A. Sargsyan, A. Papoyan, and D. Sarkisyan, "Electromagnetically induced transparency: the thickness of the vapor column is of the order of a light wavelength," J. Opt. Soc. Am. B 24, 1829-1838 (2007)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-24-8-1829

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