Modelling and reconstruction of gabor-type holograms
The processes of modelling and reconstruction of holograms are based on the calculation of the diffraction integral either on its kirchhoff-fresnel or rayleight-sommerfeld formulation. Numerically, such an integral can be evaluated via different approaches: the convolution theorem, angular spectrum,...
- Autores:
-
Lora, Gabriel Jaime
Múnera Ortiz, Natalia
García Sucerquia, Jorge Iván
- Tipo de recurso:
- Article of journal
- Fecha de publicación:
- 2011
- Institución:
- Universidad Nacional de Colombia
- Repositorio:
- Universidad Nacional de Colombia
- Idioma:
- spa
- OAI Identifier:
- oai:repositorio.unal.edu.co:unal/37741
- Acceso en línea:
- https://repositorio.unal.edu.co/handle/unal/37741
http://bdigital.unal.edu.co/27825/
- Palabra clave:
- Digital in-line holographic microscopy
diffraction
hologram reconstruction
microscopy.
- Rights
- openAccess
- License
- Atribución-NoComercial 4.0 Internacional
| Summary: | The processes of modelling and reconstruction of holograms are based on the calculation of the diffraction integral either on its kirchhoff-fresnel or rayleight-sommerfeld formulation. Numerically, such an integral can be evaluated via different approaches: the convolution theorem, angular spectrum, and fresnel transform, among others. In this paper, the modelling of gabor-type in-line holograms of opaque particles of different diameters is presented. Those holograms are thereafter reconstructed by the numerical evaluation of the diffraction process that a spherical wavefront undergoes when it illuminates the hologram. The modelling-reconstruction process is employed for studying the performance of digital in-line holographic microscopy while the concentration of a simulated monodispersed monolayer is varied. |
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