On the line profile coefficient for stimulated emission

Details On the line profile coefficient for stimulated emission On the line profile coefficient for stimulated emission

Oct 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983a%26a...127..224c&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 127, no. 1, Oct. 1983, p. 224-226. NASA-NBS-supported research.

Astronomy and Astrophysics

Astrophysics

7

Atomic Spectra, Electron Transitions, Line Shape, Radiative Transfer, Stimulated Emission, Optical Transition, Quantum Mechanics, Spontaneous Emission

Scientific paper

It is pointed out that the line profile coefficients for spontaneous and stimulated emission are identical in low-intensity radiation fields. In more intense radiation fields, however, the stimulated emission profiles in the radiative transfer equation and in the rate equations for the atomic level populations may differ from each other, owing to their different physical nature. A seeming discrepancy between the stimulated emission profiles of the usual semi-classical approach and a recent quantum mechanical approach by Cooper et al. (1982), which should also be valid for intense "broadband" fields, is discussed and shown to have negligible consequences for low-intensity radiation fields.

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