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  4. Sub-100-fs Kerr lens mode-locked Yb:Lu<sub>2</sub>O<sub>3</sub> thin-disk laser oscillator operating at 21 W average power
 
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Sub-100-fs Kerr lens mode-locked Yb:Lu<sub>2</sub>O<sub>3</sub> thin-disk laser oscillator operating at 21 W average power

Auteur(s)
Modsching, Norbert 
Institut de physique 
Drs, Jakub 
Institut de physique 
Fischer, Julien
Paradis, Clément 
Institut de physique 
Labaye, François
Gaponenko, Maxim 
Institut de physique 
Kränkel, Christian
Wittwer, Valentin 
Institut de physique 
Südmeyer, Thomas 
Institut de physique 
In
Optics Express, Optical Society of America, 2019/27/11/16111-16120
Résumé
We investigate power-scaling of a Kerr lens mode-locked (KLM) Yb:Lu<sub>2</sub>O<sub>3</sub> thin-disk laser (TDL) oscillator operating in the sub-100-fs pulse duration regime. Employing a scheme with higher round-trip gain by increasing the number of passes through the thin-disk gain element, we increase the average power by a factor of two and the optical-to-optical efficiency by a factor of almost three compared to our previous sub-100-fs mode-locking results. The oscillator generates pulses with a duration of 95 fs at 21.1 W average power and 47.9 MHz repetition rate. We discuss the cavity design for continuous-wave and mode-locked operation and the estimation of the focal length of the Kerr lens. Unlike to usual KLM TDL oscillators, an operation at the edge of the stability zone in continuous-wave operation is not required. This work shows that KLM TDL oscillators based on the gain material Yb:Lu<sub>2</sub>O<sub>3</sub> are an excellent choice for power-scaling of laser oscillators in the sub-100-fs regime, and we expect that such lasers will soon operate at power levels in excess of hundred watts.
Identifiants
https://libra.unine.ch/handle/123456789/2930
_
10.1364/OE.27.016111
Type de publication
journal article
Dossier(s) à télécharger
 main article: Modsching_N._Sub-100-fs_20190605.pdf (1.13 MB)
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