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

Dahl, K., Spani Molella, L., Rinkleff, R.-H., & Danzmann, K. (2008). Switching from „absorption within transparency“ to “transparency within transparency” in an electromagnetically induced absorption dominated transition. Optics Letters, 33(9), 983-985. doi:10.1364/OL.33.000983.

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Dahl, Katrin1, Author              
Spani Molella, Luca1, Author
Rinkleff, Rolf-Hermann1, Author              
Danzmann, Karsten1, Author              
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1Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, Hannover, DE, ou_24010              

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 Abstract: 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 counterrotating 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.

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 Dates: 2008-05
 Publication Status: Published in print
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 Identifiers: DOI: 10.1364/OL.33.000983
eDoc: 359655
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Title: Optics Letters
Source Genre: Journal
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Pages: - Volume / Issue: 33 (9) Sequence Number: - Start / End Page: 983 - 985 Identifier: ISSN: 1539-4794