23 August 2007 Diode-pumped actively Q-switched thulium laser
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Proceedings Volume 6731, International Conference on Lasers, Applications, and Technologies 2007: Advanced Lasers and Systems; 673114 (2007) https://doi.org/10.1117/12.752870
Event: International Conference on Lasers, Applications, and Technologies '07, 2007, Minsk, Belarus
Abstract
The properties of several Tm doped crystals regarding application in Q-switched tunable laser were analyzed theoretically. The acousto-optically Q-switched Tm:YLF laser is described in experimental part. The fiber coupled (0.4-mm core diameter) laser diode bar at 792-nm wavelength was deployed for pumping. The uncoated, with 3.5% dopant of thulium YLF rod of &slasho;3x8mm size wrapped with indium foil was mounted in copper heat-sink maintaining 293 K temperature of coolant water. Above 6 W of output power and near 50% slope efficiency with respect to absorbed pump power was demonstrated in free-running mode for a short, 40-mm long resonator. The quartz acousto-optic modulator with above 80% diffraction efficiency for 25-W power of RF was taken as the Q-switch for such a laser. In the best case of Q-switching mode up to 2-mJ output energy with 15-ns pulse duration corresponding to 100-kW peak power was demonstrated for rep. rate of a few Hz. Emission wavelength was around 1904 nm for both free-running and Q-switching regimes
© (2007) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
J. K. Jabczynski, J. K. Jabczynski, W. Zendzian, W. Zendzian, J. Kwiatkowski, J. Kwiatkowski, H. Jelinkova, H. Jelinkova, J. Sulc, J. Sulc, M. Nemec, M. Nemec, } "Diode-pumped actively Q-switched thulium laser", Proc. SPIE 6731, International Conference on Lasers, Applications, and Technologies 2007: Advanced Lasers and Systems, 673114 (23 August 2007); doi: 10.1117/12.752870; https://doi.org/10.1117/12.752870
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