The Universal Cross-Section of Photonic Interaction ()
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.
Share and Cite:
Hutchin, R. (2015) The Universal Cross-Section of Photonic Interaction.
Optics and Photonics Journal,
5, 173-176. doi:
10.4236/opj.2015.55016.