TITLE:
The Universal Cross-Section of Photonic Interaction
AUTHORS:
Richard A. Hutchin
KEYWORDS:
Photonic Cross-Section, Stimulated Emission, Excitation
JOURNAL NAME:
Optics and Photonics Journal,
Vol.5 No.5,
May
15,
2015
ABSTRACT: In 1917,
Einstein published his paper [1] renowned for the discovery of stimulated
emission. However, it also contained the principles which allowed the
calculation of the universal photonic cross-section = λ2/2π. Any heavy electronic system will have this
cross-section for photonic excitation and stimulated emission in its rest
frame. The modifications of this cross-section due to the recoil of the emitter
have not yet been calculated, but are in general expected to be second order in
recoil velocity.