Passively Q-switched Pr:YLF laser with a Co2+:MgAl2O4 saturable absorber

Link:
Autor/in:
Erscheinungsjahr:
2017
Medientyp:
Text
Beschreibung:
  • © 2017 Optical Society of America. We report on a 2ω-OPSL-pumped passively Q-switched Pr3:LiYF4 laser operating at the wavelengths of 523, 607, and 640 nm. For this, we utilized a Co2-doped MgAl2O4 (MALO) crystal as a saturable absorber in the visible range for the first time, to the best of our knowledge. In the green spectral region, the pulse duration was 210 ns with a pulse energy of 3.6 μJ and a repetition rate of 125 kHz. The minimum pulse duration of 87 ns at the highest pulse energy of 8.6 μJ was obtained at a repetition rate of 110 kHz at 607 nm. The highest Q-switched average laser power of 1.4 W was obtained at an absorbed continuous-wave pump power of 3.3 W with a slope efficiency of 47% at 640 nm. Absorption saturation measurements with Co:MALO were performed, and ground and excited state absorption cross sections in the visible spectral range were determined.
Lizenz:
  • info:eu-repo/semantics/closedAccess
Quellsystem:
Forschungsinformationssystem der UHH
Interne Metadaten
Quelldatensatz
oai:www.edit.fis.uni-hamburg.de:publications/f7bd1b10-dcb9-4b02-ae88-c31132c1b96c