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Response-theory for nonresonant hole burning: Stochastic dynamics

Gregor Diezemann
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Abstract

Using non-linear response theory the time signals relevant for nonresonant spectral hole burning are calculated. The step-reponse function following the application of a high amplitude ac field (pump) and an intermediate waiting period is shown to be the sum of the equilibrium integrated response and a modification due to the preparation via ac irradiation. Both components are calculated for a class of stochastic dipole reorientation models. The results indicate that the method can be used for a clearcut distinction of homogeneously and heterogeneously broadened susceptibilities as they occur in the relaxation of supercooled liquids or other disordered materials. This is because only in the heterogeneous case is a frequency selective modification of the response possible.

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Gregor Diezemann. 2000-08-16. Response-theory for nonresonant hole burning: Stochastic dynamics. https://doi.org/10.1209/epl%2Fi2001-00195-4

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