Absorption and stimulated emission by a thin slab obeying the Lorentz oscillator model
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Absorption & Stimulated Emissi ...
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Final Accepted Manuscript
Author
Mansuripur, MasudAffiliation
Univ Arizona, Coll Opt SciIssue Date
2019-09-01
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IOP PUBLISHING LTDCitation
Mansuripur, M. (2019). Absorption and stimulated emission by a thin slab obeying the Lorentz oscillator model. Japanese Journal of Applied Physics, 58(SK), SKKB02.Rights
© 2019 The Japan Society of Applied Physics.Collection Information
This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.Abstract
In his celebrated 1916-17 papers in which he proposed the A and B coefficients for the spontaneous and stimulated emission of energy quanta from excited atoms, Einstein conjectured that stimulated emission involves the release of individual quanta (later dubbed "photons") along the direction of an incident photon with the same energy, momentum, phase, and polarization state as that of the incident photon. According to classical electrodynamics, of course, an oscillating dipole must radiate an azimuthally symmetric electromagnetic field around its axis of oscillation. Nevertheless, Einstein suggested that the release of stored energy from excited atoms in the form of discrete quanta (photons) must be directional, and that, in the case of stimulated emission, the direction of the emitted photon must coincide with that of the incident photon. The goal of the present paper is to show that some of the prominent features of absorption and stimulated emission emerge from Maxwellian electrodynamics in conjunction with the simple mass-and-spring model of an atom known as the Lorentz oscillator model. (C) 2019 The Japan Society of Applied PhysicsNote
12 month embargo; published 31 July 2019ISSN
0021-4922EISSN
1347-4065Version
Final accepted manuscriptae974a485f413a2113503eed53cd6c53
10.7567/1347-4065/ab2cc6