The radiance and phase-space representations of the cross-spectral density operator Academic Article uri icon


  • Hilbert space operators are introduced into classical wave theory, which make it possible to associate a unique operator with the cross-spectral density. By linearly mapping this operator onto an associated phase-space one obtains a wide class of generalized radiance functions, including two well-known ones that were introduced by Walther in a different manner. When the source is quasi-homogeneous and the wavelength is short enough all these functions become identical; and this unique limit is found to have all the properties of the traditional radiance, at least in the source plane. 1987.

published proceedings

  • Optics Communications

author list (cited authors)

  • Agarwal, G. S., Foley, J. T., & Wolf, E.

citation count

  • 27

complete list of authors

  • Agarwal, GS||Foley, JT||Wolf, E

publication date

  • April 1987