Propagation of a partially coherent beam under the interaction of small and large scales
| Autor: | J. Garnier, Laurent Videau, C. Gouedard |
|---|---|
| Rok vydání: | 2000 |
| Předmět: |
Physics
business.industry Kinoform Paraxial approximation Radius Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Speckle pattern Superposition principle Optics Wigner distribution function Rayleigh distance Electrical and Electronic Engineering Physical and Theoretical Chemistry business Beam (structure) |
| Zdroj: | Optics Communications. 176:281-297 |
| ISSN: | 0030-4018 |
| Popis: | This paper deals with the propagation of Schell-model sources. Two different and complementary approaches are developed. The first one is standard and based on the study of the Wigner distribution function. The second one follows from a generic statistical representation of the speckle pattern as the superposition of elementary and independent modes. Precise results are obtained for the small- and large-scale characteristics of the beam: optical intensity profile, Rayleigh distance, speckle radius and intensity profiles of the speckle spots. These results are finally applied to the determination of the main characteristics of the focal spot generated by a Kinoform Phase Plate. We also give the complete expressions of the above quantities when the conditions of paraxial approximation are not fulfilled. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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