D'Aguanno, G.Mattiucci, N.Scalora, M.Bloemer, M.J.Zheltikov, A.M.2020-05-142020-05-142005-05-02D'Aguanno, G.; et al.; Electromagnetic density of modes for a finite-size structure; InternationalQuantum Electronics Conference, 2004. (IQEC).; https://ieeexplore.ieee.org/document/1366987https://doi.org/10.1364/IQEC.2004.IThG32http://hdl.handle.net/11603/18629InternationalQuantum Electronics Conference, 2004. (IQEC).We give a simple and physically pleasing definition of the electromagnetic density of modes for finite-size structures filled with a generic dielectric material. The role of absorption and dispersion of the material is also investigated.2 pagesen-USThis item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.Public Domain Mark 1.0This 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.Text