4.6 Article

Transition-metal-doped saturable absorbers for passive Q-switching of visible lasers

Journal

OPTICAL MATERIALS EXPRESS
Volume 10, Issue 8, Pages 1827-1842

Publisher

OPTICAL SOC AMER
DOI: 10.1364/OME.395893

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Funding

  1. Ministry of Education, Culture, Sports, Science and Technology
  2. Bundesministerium fur Bildung und Forschung [13N14192]

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We experimentally investigate crystals doped with tetravalent chromium or divalent cobalt as saturable absorbers for passive Q-switching of visible solid-state lasers. The recovery time of the ground-state and excited-state absorption cross sections are determined by pump-probe and Z-scan measurements, respectively. We provide saturation intensities, useful wavelength ranges of the investigated materials, and advices to realize passive Q-switching of visible lasers using these crystals as saturable absorbers. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

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