Method of Image Green's Function in Grating Theory: Reflection Extinction Theorem
| Autor: | Junichi Nakayama, Yasuhiko Tamura |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Diffraction
Physics business.industry wave diffraction Grating Kirchhoff integral theorem periodic surface Electronic Optical and Magnetic Materials Image (mathematics) Kirchhoff's diffraction formula symbols.namesake Optics Reflection (mathematics) reflection extinction theorem Extinction (optical mineralogy) Green's function symbols image integral equation Electrical and Electronic Engineering business |
| Zdroj: | IEICE Transactions on Electronics. :51-54 |
| ISSN: | 1745-1353 0916-8524 |
| Popis: | In the theory of diffraction gratings, the conventional integral method is considered as a powerful tool of numerical analysis. But it fails to work at a critical angle of incidence, because a periodic Green's function (integral kernel) diverges. This problem was resolved by the image integral equation in a previous paper. Newly introducing the reflection extinction theorem, this paper derives the image extinction theorem and the image integral equation. Then, it is concluded that the image integral equation is made up of two physical processes: the image surface radiates a reflected plane wave, whereas the periodic surface radiates the diffracted wave. |
| Databáze: | OpenAIRE |
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