Measurement of the electronic transition dipole moment by Autler-Townes splitting: Comparison of three- and four-level excitation schemes for the Na2 A 1Sigma(u)+ - X 1Sigma(g)+ system

The Journal of Chemical Physics
E H AhmedS Magnier

Abstract

We present a fundamentally new approach for measuring the transition dipole moment of molecular transitions, which combines the benefits of quantum interference effects, such as the Autler-Townes splitting, with the familiar R-centroid approximation. This method is superior to other experimental methods for determining the absolute value of the R-dependent electronic transition dipole moment function mu(e)(R), since it requires only an accurate measurement of the coupling laser electric field amplitude and the determination of the Rabi frequency from an Autler-Townes split fluorescence spectral line. We illustrate this method by measuring the transition dipole moment matrix element for the Na2 A 1Sigma(u)+ (v' = 25, J' = 20e)-X 1Sigma(g)+ (v" = 38, J" = 21e) rovibronic transition and compare our experimental results with our ab initio calculations. We have compared the three-level (cascade) and four-level (extended Lambda) excitation schemes and found that the latter is preferable in this case for two reasons. First, this excitation scheme takes advantage of the fact that the coupling field lower level is outside the thermal population range. As a result vibrational levels with larger wave function amplitudes at the outer turni...Continue Reading

References

Aug 1, 1990·Physical Review. a·L M NarducciJ R Tredicce
Mar 5, 1990·Physical Review Letters·S E HarrisA Imamoglu
May 20, 1991·Physical Review Letters·K BollerS E Harris
May 27, 1991·Physical Review Letters·A M LyyraL Li
Mar 24, 2005·Physical Review Letters·Saikat GhoshAlexander L Gaeta
Aug 11, 2005·Physical Review Letters·K WinklerJ Hecker Denschlag

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Citations

Mar 17, 2011·The Journal of Chemical Physics·Alexander Schubert, Volker Engel
Sep 17, 2015·The Journal of Chemical Physics·Aydin SanliA Marjatta Lyyra
Jun 16, 2006·Physical Chemistry Chemical Physics : PCCP·Yangsoo KimTrevor J Sears
Jan 1, 2011·Faraday Discussions·Cristina Sanz-SanzGraham A Worth
Feb 17, 2019·The Journal of Chemical Physics·Nadeepa JayasundaraLutz Hüwel
Aug 7, 2012·The Journal of Physical Chemistry. a·Gareth W Richings, Graham A Worth

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