Journal ArticleDOI
Spectral density in time‐dependent perturbation theory
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In this paper, the spectral density of radiation is defined within the context of the random phase approximation, and an expression for the radiation density in terms of the Fourier components of the field amplitudes is given.Abstract:
The spectral density of radiation is defined within the context of the random phase approximation. This gives an expression for the radiation density in terms of the Fourier components of the field amplitudes. The result is applied to the case of a molecule in interaction with light. The approach with Fourier integrals overcomes some difficulties associated with an approach which uses a summation of discrete waves.read more
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Scattering lasers : an explosion of the smallest lasers possible
TL;DR: In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website as mentioned in this paper, in case of legitimate complaints the material will be removed.
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Dynamics of a two-level system in a broadband light field
TL;DR: In this article, the authors provided analytic solutions of the optical Bloch equations for a two-level system interacting with a broadband light field. Butler et al. used the results to obtain an expression for the nonlinear polarizability of a twolevel atom irradiated by a wave with a Lorentzian spectral density.