Propagation equation of Gaussian beams through apertured focusing systems and parametric study of focal shift
| Autor: | Peng Sun, Jinge Guan, Gao Wang, Yang Yu, Ji Liu |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Diffraction
Physics Fresnel zone Geometrical optics business.industry Aperture Astrophysics::Instrumentation and Methods for Astrophysics Physics::Optics 01 natural sciences Encircled energy Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention 010309 optics Lens (optics) Optics law 0103 physical sciences Fresnel number Computer Vision and Pattern Recognition business Gaussian beam |
| Zdroj: | Journal of the Optical Society of America A. 36:818 |
| ISSN: | 1520-8532 1084-7529 |
| DOI: | 10.1364/josaa.36.000818 |
| Popis: | Diffraction of a Gaussian beam passing through a circular aperture subsequently focused by a lens is investigated. An expression is derived for the amplitude distribution beyond the lens. With the aid of the axial intensity and encircled energy, the effect of the aperture-lens separation on the focal shift is obtained, and the quantitative influence of the truncation parameter and Fresnel number on the focal shift is also presented. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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