Journal ArticleDOI
The angular dependence of partially redistributed resonance radiation
R. J. Ballagh,J. Cooper +1 more
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TLDR
In this article, the angular distribution and frequency dependence of radiation scattered by a spatially degenerate atom undergoing collisions are derived using a previously developed formalism of the quantum theory of line broadening for an atom in its rest frame.Abstract:
Explicit expressions for the angular distribution and frequency dependence of radiation scattered by a spatially degenerate atom undergoing collisions are derived using a previously developed formalism of the quantum theory of line broadening for an atom in its rest frame. Results valid in the impact regime for resonant scattering are presented for the cases of linear incident and scattered polarization circular incident and linear scattered polarization, and unpolarized incident radiation with no monitoring of the scattered polarization. These results relate to scattering involving a j - j + or - 1 - j atomic transition, with lower-state interactions neglected; the expressions obtained take a relatively simple form involving atomic multipolar relaxation rates of the order of k = 0 and k = 2. The angular distributions for each case are combined with the frequency dependences to yield a three-component frequency redistribution function for an s-p-s transition, the components being a coherent term, a frequency-redistributed term with the same angular dependence as the coherent term, and an isotropic frequency-redistributed term.read more
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Journal ArticleDOI
The Rabi frequency in optical spectra
TL;DR: The use of tunable lasers in atomic spectroscopy has provided new opportunities to study the effects of intense coherent resonant radiation on the dynamics of atoms, such as dynamic Stark splitting of resonances, nutational oscillations in fluorescence and periodic photon bunching and antibunching of the emitted light as discussed by the authors.
Journal ArticleDOI
Collisional redistribution of radiation
Keith Burnett,Keith Burnett +1 more
TL;DR: In this paper, a review of the collisional redistribution of resonance atomic radiation in dilute gases is presented, where the formation of scattered spectra in weak and intense fields is discussed and the formation that may be obtained from experiments is presented.
Journal ArticleDOI
Non-coherent scattering in subordinate lines: III. Generalized redistribution functions
TL;DR: In this article, the generalized redistribution function has been extended to other resonance two-photon processes, including inverse Raman scattering, resonance Raman absorption and emission, and resonance twophoton emission and absorption.
Journal ArticleDOI
Broadening of the sodium D lines by rare gases
TL;DR: In this article, the authors measured the impact-broadened Lorentzian linewidth from the normalised absorption, detected as fluorescence, in the 5-20 GHz region of the line wings.
Journal ArticleDOI
Collisional redistribution of radiation. II. The effects of degeneracy on the equations of motion for the density matrix
Keith Burnett,J. Cooper +1 more
TL;DR: In this article, the authors apply the analysis of paper I to degenerate atomic systems and calculate the effect of correlations between an atom (the absorber) and perturbers in the binary-collision approximation.
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