Simple formula used to predict superluminal reflection on a multidielectric mirror
| Autor: | L. Dettwiller |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Physics
Sequence Superluminal motion Electromagnetic spectrum business.industry Mathematical analysis Electromagnetic radiation Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Reflection (mathematics) Optics Almost everywhere Computer Vision and Pattern Recognition Limit (mathematics) Reflection coefficient business |
| Zdroj: | Journal of the Optical Society of America. A, Optics, image science, and vision. 38(10) |
| ISSN: | 1520-8532 |
| Popis: | For a multidielectric mirror, which is a stacking of N identical patterns, each consisting of several layers, we consider the limit ρ ∞ of its reflection coefficient ρ N when N tends to infinity. When the weak absorption by the pattern is considered, we prove that the sequence of functions ρ N of the pulsation ω uniformly converges almost everywhere on the electromagnetic spectrum and that the expression of ρ ∞ is quite intuitive. This result is useful in conceiving original experiments: indeed, owing to an important difference between the phase-shift at the reflection upon a quarter-wave stack for two different configurations of the stack, we deduce the existence of spectral domains where superluminal reflection occurs in a configuration for which such a reflection, to the best of the author’s knowledge, has not been experimentally investigated until now. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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