I present a formulation for treating diffraction effects on total irradiance in the case of a Planck source; earlier work generally depended on calculating diffraction effects on spectral irradiance followed by summation over spectral components. The formulation is derived and demonstrated for Fraunhofer diffraction by circular apertures, rectangular apertures and slits, and Fresnel diffraction by circular apertures. The prospects for treating other sources and optical systems are also discussed.
© 2004 Optical Society of America
Original Manuscript: April 16, 2003
Revised Manuscript: February 11, 2004
Published: May 1, 2004
Eric L. Shirley, "Diffraction effects on broadband radiation: formulation for computing total irradiance," Appl. Opt. 43, 2609-2620 (2004)