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Atomic and Laser Spectroscopy$
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Alan Corney

Print publication date: 2006

Print ISBN-13: 9780199211456

Published to Oxford Scholarship Online: September 2007

DOI: 10.1093/acprof:oso/9780199211456.001.0001

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The absorption and stimulated emission of radiation

The absorption and stimulated emission of radiation

(p.271) 9 The absorption and stimulated emission of radiation
Atomic and Laser Spectroscopy

Alan Corney

Oxford University Press

Starting from the absorption of radiation by a classical electron oscillator, Einstein's A and B coefficients for spontaneous and stimulated transitions are introduced. Stimulated transition rates are derived by time-dependent perturbation theory. Relations between the Einstein B coefficients and oscillator strengths are also determined. The atomic frequency response for stimulated transitions is explained.

Keywords:   absorption, stimulated emission, Einstein A and B coefficients, time-dependent perturbation theory, oscillator strengths, atomic frequency response

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