Generation of articial thermal sources and their characterization by intensity interferometry
The Hanbury Brown and Twiss (HB-T) effect is fundamental to understand the nature of light, with important applications, for instance in ghost imaging. In this work, some coherence properties of the light emitted by an artifificial source were investigated. In particular, the second-order coherence...
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| Tipo de recurso: | tesis de maestría |
| Fecha de publicación: | 2020 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/350539 |
| Acceso en línea: | https://hdl.handle.net/2117/350539 |
| Access Level: | acceso abierto |
| Palabra clave: | Photonics Interferometry Hanbury Brown and Twiss eect photon bunching optical coherence intensity interferometry pseudothermal light Fotònica Interferometria Àrees temàtiques de la UPC::Enginyeria de la telecomunicació |
| Sumario: | The Hanbury Brown and Twiss (HB-T) effect is fundamental to understand the nature of light, with important applications, for instance in ghost imaging. In this work, some coherence properties of the light emitted by an artifificial source were investigated. In particular, the second-order coherence function in time was retrieved under different experimental conditions. The work included the generation of pseudothermal light by using distinct rotating diffusers. The emitters were then characterized by setting an intensity interferometer (also called Hanbury Brown-Twiss interferometer). This procedure allowed to measure the photon bunching, or equivalently whether and how photons were eventually grouped at the detector. The results showed that the variation of the rotation speed of the difuser played a role in the second-order temporal coherence function, particularly when low rotation speeds were considered. |
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