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Sources laser solides pompées par diode, émettant autour de 1000 et 500 nm à base de cristaux dopés ytterbium et de semiconducteurs.

Mathieu Jacquemet 1
1 Laboratoire Charles Fabry de l'Institut d'Optique / Elsa
LCFIO - Laboratoire Charles Fabry de l'Institut d'Optique
Abstract : The background of this thesis is the study of new diode-pumped solid-state laser sources emitting a continuous wave single-frequency radiation in the near infrared (1000 nm) and in the blue-green by second harmonic generation, particularly at 501.7 nm. These laser sources aim metrological applications such as ultra-high resolution spectroscopy of molecular iodine (127I2) and the practical application of the meter, fields in which argon lasers are currently used.
The first chapter of this work presents the context of this study, through a state of the art of the solid-state laser sources around 500 nm, the adopted and explored solutions, as well as some theoretical elements concerning second harmonic generation. The common principle of these two ways is to produce a single-frequency laser emission at 1000 nm, which is then frequency doubled.
The second chapter deals with the solution using ytterbium-doped crystals emitting at 1000 nm, whose emission is intracavity frequency-doubled in a KNbO3 nonlinear crystal. Two laser crystals are used: Yb:YSO and Yb:KYW. In both cases and in single-frequency operation, at 501.7 nm after the frequency doubling process, we demonstrate output powers ranging between 35 and 60 mW for a pump power of 4W at 980 nm.
The third chapter relates to the second studied way using a VCSEL type semiconductor amplifying medium with quantum wells. The active structure, composed of a Bragg mirror and quantum wells, is assembled in an extended cavity and optically pumped. The laser emission around 1000 nm is frequency doubled to produce 60 mW in single-frequency operation at 500 nm, from a pump power of 6.5 W at 808 nm.
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https://pastel.archives-ouvertes.fr/tel-00011531
Contributor : Mathieu Jacquemet <>
Submitted on : Thursday, February 16, 2006 - 12:14:57 AM
Last modification on : Wednesday, September 16, 2020 - 5:38:33 PM
Long-term archiving on: : Friday, November 25, 2016 - 10:13:49 AM

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  • HAL Id : tel-00011531, version 2

Citation

Mathieu Jacquemet. Sources laser solides pompées par diode, émettant autour de 1000 et 500 nm à base de cristaux dopés ytterbium et de semiconducteurs.. Physique Atomique [physics.atom-ph]. Université Paris Sud - Paris XI, 2005. Français. ⟨tel-00011531v2⟩

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