Interferometric output stabilization of a femtosecond optical parametric oscillator
[ANGLÈS] In this project we present a new technique to stabilize the cavity length of a tunable synchronously-pumped OPO and consequently achieve wavelength stability using more standard equipment commonly used to stabilize single frequency lasers. This technique is based on a concept that was intro...
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| Tipo de recurso: | tesis de maestría |
| Fecha de publicación: | 2013 |
| 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:2099.1/18992 |
| Acceso en línea: | https://hdl.handle.net/2099.1/18992 |
| Access Level: | acceso abierto |
| Palabra clave: | Nonlinear optics Ultrafast optics Ultrafast measurement techniques Optical parametric oscillators Óptica ultrarrápidas las técnicas de medición ultrarrápida óptica no lineal osciladores paramétricos ópticos Òptica no lineal Oscil·ladors Àrees temàtiques de la UPC::Enginyeria electrònica |
| Sumario: | [ANGLÈS] In this project we present a new technique to stabilize the cavity length of a tunable synchronously-pumped OPO and consequently achieve wavelength stability using more standard equipment commonly used to stabilize single frequency lasers. This technique is based on a concept that was introduced years ago in the context of mode-locked lasers [1], in which a conventional interferometer is synchronized to the repetition rate (RR) of the laser. In this work, we will implement the use of this technique to ultrafast OPOs by deploying an external Fabry-Perot interferometer synchronous with high harmonic number (about14th) of the OPO?s RR. In order to stabilize our OPO to this reference cavity, we use standard feedback techniques where the Fabry-Perot is modulated and the signal from the detector is demodulated by a lock-in amplifier, thus providing our error signal. This one is in turn integrated by our stabilizer, before being sent to the OPO piezoelectric driver. We will present characterization of the wavelength stability and fine tuning of the signal output pulse train for both long and short term regimes. |
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