(1) Facultad de Ciencias Físico-Matemáticas, Universidad Autónoma de Puebla, 72570 Puebla, Pue., México
Abstract:
The equation for free-space propagation of the generalized radiance defined formerly by the authors in terms of the coherent-mode representation of the cross-spectral density function is derived within the accuracy of the paraxial approximation. It is shown that, in the short-wavelength limit, this generalized radiance obeys in a good approximation the fundamental radiative transfer law of classical radiometry.