Étude et réalisation de sources lasers fibrées impulsionnelles de forte puissance autour de 2 µm

Abstract : In this work, we design and make high peak power pulsed fiber lasers operating around 2 µm. The first part of this work is dedicated to the study of gain-switched thulium-doped fiber laser which emits nanosecond pulses. A fiber oscillator was built and characterized. It emits pulses with 10 ns duration, 16 µJ energy and 1,6 kW peak power. Pulses were amplified in a large core fiber to reach 150 µJ energy and 13 kW peak power per pulses. The second part of this report is dedicated to the study of mode-locked thulium-doped fiber laser. An all-fiber oscillator in solitonic regime was built and characterized. It emits solitons of 4,5 ps duration and 62 pJ energy. Pulses were also amplified to achieve more than 8 kW peak power and 30 nJ energy without significant nonlinear distortion. We discuss the limitations of pulses amplification in the nanosecond and picosecond regimes with numerical simulation.
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https://pastel.archives-ouvertes.fr/pastel-00764940
Contributor : William Renard <>
Submitted on : Thursday, December 13, 2012 - 5:06:25 PM
Last modification on : Tuesday, March 26, 2019 - 2:24:03 PM
Long-term archiving on : Thursday, March 14, 2013 - 3:53:15 AM

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William Renard. Étude et réalisation de sources lasers fibrées impulsionnelles de forte puissance autour de 2 µm. Optique [physics.optics]. Ecole Polytechnique X, 2012. Français. ⟨pastel-00764940⟩

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