Abstract

The process of simultaneous emission of two photons (of continuous probability distribution in energy) in the transition from one discrete quantum level to another is here analyzed in the correspondence principle limit in which the quantum numbers of the two states are large and the change in quantum number is small by comparison. In this limit, it proves possible to define a classical dynamical quantity [Eq. (19)], the frequency analysis of whose classical variation with time in a definite orbit determines in the given approximation the absolute transition probability and intensity distribution in the continuous spectrum in question.

© 1947 Optical Society of America

Reflection and Transmission Interference Filters Part I. Theory

L. N. Hadley and D. M. Dennison
J. Opt. Soc. Am. 37(6) 451-465 (1947)

The Ultimate Sensitivity of Radiation Detectors

R. Clark Jones
J. Opt. Soc. Am. 37(11) 879-890 (1947)

The Reflection of Light from Glass with Double and Multiple Films

Antonin Vašiček
J. Opt. Soc. Am. 37(8) 623-634 (1947)

The Total Emissivity of Various Materials at 100–500°C

B. T. Barnes, W. E. Forsythe, and E. Q. Adams
J. Opt. Soc. Am. 37(10) 804-807 (1947)

Light Distribution in the Optical Image*

M. Herzberger
J. Opt. Soc. Am. 37(6) 485-493 (1947)