Characterization of InGaAs and InGaAsN semiconductor saturable absorber mirrors for high-power mode-locked thin-disk lasers

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2011
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Kleinbauer, Jochen
Sutter, Dirk H.
Puustinen, Janne
Guina, Mircea
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We report a comparative study of carrier dynamics in semiconductor saturable absorber mirrors (SESAMs) containing InGaAs quantum wells and InGaAsN quantum wells (QWs). The static and dynamic reflectivity spectra were measured with a Fourier-transform-infrared-spectrometer and a pump-probe setup, respectively. The influence of rapid thermal annealing (RTA) on carrier dynamics was studied. Due to the reduction of defect states by RTA we observed an increase of the static reflectivity and an increase of the electron–hole recombination time. We demonstrate that nitrogen incorporation causes a decrease of the static reflectivity of the SESAMs, an increase of the modulation depth, and a reduction of the carriers’ recombination time. We also investigated the mode-locking behavior of the SESAMs in an Yb:YAG thin-disk laser oscillator. The highest pulse energies directly obtained from a laser oscillator under stable operation conditions were achieved when using a SESAM with InGaAsN quantum wells.

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ISO 690SCHÄTTIGER, Farina, Dominik BAUER, Jure DEMSAR, Thomas DEKORSY, Jochen KLEINBAUER, Dirk H. SUTTER, Janne PUUSTINEN, Mircea GUINA, 2011. Characterization of InGaAs and InGaAsN semiconductor saturable absorber mirrors for high-power mode-locked thin-disk lasers. In: Applied Physics B. 2011, 106(3), pp. 605-612. ISSN 0946-2171. Available under: doi: 10.1007/s00340-011-4697-7
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@article{Schattiger2011Chara-16090,
  year={2011},
  doi={10.1007/s00340-011-4697-7},
  title={Characterization of InGaAs and InGaAsN semiconductor saturable absorber mirrors for high-power mode-locked thin-disk lasers},
  number={3},
  volume={106},
  issn={0946-2171},
  journal={Applied Physics B},
  pages={605--612},
  author={Schättiger, Farina and Bauer, Dominik and Demsar, Jure and Dekorsy, Thomas and Kleinbauer, Jochen and Sutter, Dirk H. and Puustinen, Janne and Guina, Mircea}
}
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