Experimental demonstration of pulse characterization in the picosecond and sub-picosecond regimes
The reliable characterization of ultrafast laser pulses is essential for science and technology, yet conventional nonlinear techniques such as second-harmonic autocorrelation or FROG/SPIDER require relatively high pulse energies and complex instrumentation. This thesis presents the experimental vali...
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| Tipo de recurso: | tesis de maestría |
| Fecha de publicación: | 2025 |
| 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:2117/452547 |
| Acceso en línea: | https://hdl.handle.net/2117/452547 |
| Access Level: | acceso embargado |
| Palabra clave: | Metrology Quantum optics Optoelectronics Pulse characterization Metrologia Òptica quàntica Optoelectrònica Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telecomunicació òptica::Fotònica |
| Sumario: | The reliable characterization of ultrafast laser pulses is essential for science and technology, yet conventional nonlinear techniques such as second-harmonic autocorrelation or FROG/SPIDER require relatively high pulse energies and complex instrumentation. This thesis presents the experimental validation of a quantum-inspired technology as a linear-optics alternative for ultrafast pulse metrology. Building on prior demonstrations in the nanosecond regime, we developed experimental setups and extended the method to the picosecond and femtosecond domains. Weshowthat our demonstration provides results that closely track a standard autocorrelator, while in the picosecond and femtosecond domain it remains effective where direct electronic detection fails. These findings establish our demonstration as a practical and accessible diagnostic tool that complements existing standard techniques. |
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