The Contributions of Homogeneous and Evanescent Plane Waves to the Scalar Optical Field: Exact Diffraction Formulae
- 1 May 1991
- journal article
- research article
- Published by Taylor & Francis in Journal of Modern Optics
- Vol. 38 (5) , 865-875
- https://doi.org/10.1080/09500349114550851
Abstract
The angular spectrum representation of a scalar wave field separates naturally into two parts–the contribution of homogeneous plane waves and the contribution of inhomogeneous (or evanescent) plane waves. Exact diffraction formulae are derived for the separate contributions for an arbitrary incident field, when the field is monochromatic, and also when the field has arbitrary time-dependence.Keywords
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