Electromagnetically Induced Transparency Spectroscopy

Details Electromagnetically Induced Transparency Spectroscopy Electromagnetically Induced Transparency Spectroscopy

2012-01-03

arxiv.org/abs/1201.0581v1

Physics

Quantum Physics

17 pages, 6 figures

Scientific paper

We propose a method based on the Electromagnetically Induced Transparency (EIT) phenomenon for the detection of molecules which exist as a small minority in the presence of a majority of absorbers. The EIT effect we employ effectively eliminates the absorption of the majority species in the spectral region where it overlaps with the absorption of the minority species. The method can also be used to enhance local-modes transitions which overlap spectrally with a background of other local-modes transitions of the same molecule. The general theory is applied to the case of sparse and congested background spectra within the same molecule and to the recording of the spectra of isotopomers (of Chlorine and Methanol) that are in minority relative to other isotopomers which constitute the majority of molecules present.

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