Spectral domain modeling of a circular nano-aperture in a conducting screen
Event details
| Date | 26.06.2013 |
| Speaker |
Krzysztof A. Michalski, Fellow IEEE, Texas A&M University Bio: Dr. Krzysztof A. Michalski received the MS degree from the Wroclaw Technological University, Poland, in 1974, and the PhD degree from the University of Kentucky, Lexington, in 1981, both in electrical engineering. From 1982 to 1986 he was with the University of Mississippi, and since 1987 he has been with Texas A&M University. Over the years, he also held visiting appointments with Ecole Polytechnique Fédérale de Lausanne, Université de Nice–Sophia Antipolis, Universitat Politecnica de Catalunya, and Technische Universität München, and served as visiting scientist with Sandia Laboratories and the National Institute of Standards and Technology. His research interests are in electromagnetic theory and computational electromagnetics, with emphasis on Green function methods and layered media. Dr. Michalski is an IEEE Fellow and a recipient of the Oliver Lodge Premium from IEE. |
| Location | |
| Category | Conferences - Seminars |
The electromagnetic field transmitted by a subwavelength circular aperture in a perfectly conducting screen of infinitesimal thickness illuminated by an obliquely incident plane wave is analyzed based on the Bethe-Bouwkamp quasi-static model of the field in the aperture plane. The problem is formulated in the spectral domain and the solution is expressed in terms of one-dimensional Hankel transform integrals, which are efficiently evaluated by numerical quadrature with extrapolation. From these integral representations, closed form expressions are also derived for the transmitted near-zone and far-zone fields. Sample numerical results are presented to demonstrate the utility of the method in the modeling of aperture-type near-field optical probes.
Practical information
- General public
- Free
Organizer
- Michael Mattes <[email protected]>
Contact
- Michael Mattes <[email protected]>