15 February 2012 SESAMs for high-power femtosecond modelocking: power scaling of an Yb:LuScO3 thin disk laser to 23 W and 235 fs
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Abstract
We report on power scaling of a modelocked thin disk laser (TDL) based on the broadband mixed sesquioxide material Yb:LuScO3 (22 nm full width half maximum (FWHM) emission bandwidth). In a first experiment, we could demonstrate pulse durations as short as 195 fs at a moderate average power of 9.5 W. Furthermore, we were able to power scale our TDL while keeping the pulses short reaching 23 W at a pulse duration of 235 fs. A key element to achieve this result was the design of new SESAM structures with multiple quantum wells (QW) and a suitable dielectric topcoating, resulting in SESAMs with appropriate parameters for short pulse geneartion, low two-photon absorption (TPA) and high damage thresholds. We will present SESAM optimization guidelines for short pulse generation from high-power modelocked oscillators.
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Clara J. Saraceno, Clara J. Saraceno, Oliver H. Heckl, Oliver H. Heckl, Cyrill R. E. Baer, Cyrill R. E. Baer, Matthias Golling, Matthias Golling, Kolja Beil, Kolja Beil, Christian Kränkel, Christian Kränkel, Klaus Petermann, Klaus Petermann, Thomas Südmeyer, Thomas Südmeyer, Günter Huber, Günter Huber, Ursula Keller, Ursula Keller, } "SESAMs for high-power femtosecond modelocking: power scaling of an Yb:LuScO3 thin disk laser to 23 W and 235 fs", Proc. SPIE 8235, Solid State Lasers XXI: Technology and Devices, 82350Z (15 February 2012); doi: 10.1117/12.905979; https://doi.org/10.1117/12.905979
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