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Südmeyer, Thomas
Nom
Südmeyer, Thomas
Affiliation principale
Fonction
Directeur
Email
thomas.sudmeyer@unine.ch
Identifiants
Résultat de la recherche
Voici les éléments 1 - 10 sur 15
- PublicationMétadonnées seulementUltrafast thin-disk laser with 80 ?J pulse energy and 242 W of average power(2014)
; ; Keller, Ursula - PublicationMétadonnées seulementYb-doped mixed sesquioxides for ultrashort pulse generation in the thin disk laser setup(2013)
; - PublicationMétadonnées seulementSESAM mode-locked Yb: CaGdAlO< sub> 4 thin disk laser with 62 fs pulse generation(2013)
; Keller, Ursula - PublicationMétadonnées seulementCutting-edge high-power ultrafast thin disk oscillators(2013)
; - PublicationMétadonnées seulementSESAMs for high-power oscillators: design guidelines and damage thresholds(2012)
; ; Keller, Ursula - PublicationMétadonnées seulementSub-100 femtosecond pulses from a SESAM modelocked thin disk laser(2012)
; - PublicationMétadonnées seulementSelf-referenceable frequency comb from an ultrafast thin disk laser(2012)
- PublicationAccès libreUltrafast thin-disk laser with 80 µJ pulse energy and 242 W of average power
; ; Keller, UrsulaWe present a semiconductor saturable absorber mirror (SESAM) mode-locked thin-disk laser generating 80 µJ of pulse energy without additional amplification. This laser oscillator operates at a repetition rate of 3.03 MHz and delivers up to 242 W of average output power with a pulse duration of 1.07 ps, resulting in an output peak power of 66 MW. In order to minimize the parasitic nonlinearity of the air inside the laser cavity, the oscillator was operated in a vacuum environment. To start and stabilize soliton mode locking, we used an optimized high-damage threshold, low-loss SESAM. With this new milestone result, we have successfully scaled the pulse energy of ultrafast laser oscillators to a new performance regime and can predict that pulse energies of several hundreds of microjoules will become possible in the near future. Such lasers are interesting for both industrial and scientific applications, for example for precise micromachining and attosecond science. - PublicationAccès libreDual-gain SESAM modelocked thin disk laser based on Yb:Lu2O3 and Yb:Sc2O3
; Keller, UrsulaWe present for the first time a SESAM-modelocked thin-disk laser (TDL) that incorporates two gain materials with different emission spectra in a single TDL resonator. The two gain media used in this experiment are the sesquioxide materials Yb:Lu2O3 and Yb:Sc2O3, which have their spectral emission peak displaced by ≈7 nm. We can benefit from a combined gain bandwidth that is wider than the one provided by a single gain material alone and still conserve the excellent thermal properties of each disk. In these first proof-of-principle experiments we demonstrate pulse durations shorter than previously achieved with the single gain material Yb:Lu2O3. The oscillator generates pulses as short as 103 fs at a repetition rate of 41.7 MHz and a center wavelength of around 1038 nm, with an average output power of 1.4 W. A different cavity layout provides pulses with a duration of 124 fs at an output power of 8.6 W. This dual-gain approach should allow for further power scaling of TDLs and these first results prove this method to be a promising new way to combine the record output-power performance of modelocked TDLs with short pulse durations. - PublicationAccès libreSelf-referenceable frequency comb from an ultrafast thin disk laser