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Article Dans Une Revue Journal of Physical Chemistry C Année : 2009

Non-Uniqueness of Parameters Extracted from Resonant Second-Order Nonlinear Optical Spectroscopies

Résumé

Experimental data from second-order nonlinear optical spectroscopies (SFG, DFG, and SHG) provide parameters relevant to the physical chemistry of interfaces and thin films. We show that there are in general 2 N or 2 N-1 equivalent sets of parameters to fit an experimental curve comprising N resonant features, of vibrational or electronic origin for example. We provide the algorithm to calculate these sets, among which the most appropriate has to be selected. The main consequences deal with the existence of "ghost resonances", the need of a critical analysis of fit results, and the procedure to search for better sets of parameters coherent with applied constraints.
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Dates et versions

hal-02111105 , version 1 (14-05-2019)

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Bertrand Busson, Abderrahmane Tadjeddine. Non-Uniqueness of Parameters Extracted from Resonant Second-Order Nonlinear Optical Spectroscopies. Journal of Physical Chemistry C, 2009, 113 (52), pp.21895-21902. ⟨10.1021/jp908240d⟩. ⟨hal-02111105⟩
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