Electromagnetic density of modes for a finite-size three-dimensional structure
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Author/Creator ORCID
Date
2004-05-24
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Citation of Original Publication
D’Aguanno, Giuseppe; et al.; Electromagnetic density of modes for a finite-size three-dimensional structure; Physical Review E 69, 057601 (2004); https://journals.aps.org/pre/abstract/10.1103/PhysRevE.69.057601
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Public Domain Mark 1.0
This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
Public Domain Mark 1.0
This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
Subjects
Abstract
The concept of the density of modes has been lacking a precise mathematical definition for a finite-size structure. With the explosive growth in the fabrication of photonic crystals and nanostructures, which are inherently finite in size, a workable definition is imperative. We give a simple and physically intuitive definition of the electromagnetic density of modes based on the Green’s function for a generic three-dimensional open cavity filled with a linear, isotropic, dielectric material.