Biomedical subjects

Eric L Shirley

Publications and source records attributed to Eric L Shirley.

3 recordsLinked to original sources

PubMed2004

Diffraction effects on broadband radiation: formulation for computing total irradiance.

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.

Journal Article↗

PubMed2004

Intuitive diffraction model for multistaged optical systems.

A simplified framework is motivated in which many diffraction effects can be treated, especially in multistaged optical systems. The results should be especially helpful for short wavelengths and broad-band sources, for which numerical calculations can be most difficult.

Journal Article↗

PubMed2004

Diffraction corrections in radiometry: spectral and total power and asymptotic properties.

Wolf's result for integrated flux in the case of diffraction by a circular lens or aperture in the scalar, paraxial Fresnel approximation is considered anew. Compact integral formulas for pertinent infinite sums are derived, and the result's generalizations to extended sources and Planckian sources and asymptotic aspects at small wavelength and high temperature are all considered. Simplification of calculations for an actual absolute radiometer is demonstrated.

Journal Article↗