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Optics Letters

Optics Letters


  • Vol. 33, Iss. 9 — May. 1, 2008
  • pp: 983–985

Switching from “absorption within transparency” to “transparency within transparency” in an electromagnetically induced absorption dominated transition

Katrin Dahl, Luca Spani Molella, Rolf-Hermann Rinkleff, and Karsten Danzmann  »View Author Affiliations

Optics Letters, Vol. 33, Issue 9, pp. 983-985 (2008)

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The absorption of a resonant coupling laser driving a closed degenerate two-level system in an atomic cesium beam was investigated as a function of the detuning of a second laser probing the same transition. The measurements were performed for four different polarization combinations of the two laser beams. Except for the beams of counterrotating polarizations all coupling-laser absorption profiles showed “absorption within transparency,” i.e., the absorption in the region around the two-photon resonance was smaller than the absorption corresponding to the one-photon transition induced by the coupling laser, and an extra absorption peak was observed on this curve at the two-photon resonance. With regard to the beams of counter rotating polarizations we observed a switch from absorption within transparency to “transparency within transparency” when the probe-laser power exceeded the constant coupling-laser power. In other words, the cesium ensemble became mostly transparent to the coupling-laser beam at the two-photon resonance.

© 2008 Optical Society of America

OCIS Codes
(020.1670) Atomic and molecular physics : Coherent optical effects
(020.4180) Atomic and molecular physics : Multiphoton processes
(300.1030) Spectroscopy : Absorption

ToC Category:

Original Manuscript: January 23, 2008
Revised Manuscript: March 13, 2008
Manuscript Accepted: March 13, 2008
Published: April 29, 2008

Katrin Dahl, Luca Spani Molella, Rolf-Hermann Rinkleff, and Karsten Danzmann, "Switching from “absorption within transparency” to “transparency within transparency” in an electromagnetically induced absorption dominated transition," Opt. Lett. 33, 983-985 (2008)

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