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Proceedings Paper

Diode-pumped actively Q-switched thulium laser
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Paper 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

Paper Details

Date Published: 23 August 2007
PDF: 8 pages
Proc. SPIE 6731, International Conference on Lasers, Applications, and Technologies 2007: Advanced Lasers and Systems, 673114 (23 August 2007); doi: 10.1117/12.752870
Show Author Affiliations
J. K. Jabczynski, Military Univ. of Technology (Poland)
W. Zendzian, Military Univ. of Technology (Poland)
J. Kwiatkowski, Military Univ. of Technology (Poland)
H. Jelinkova, Czech Technical Univ. (Czech Republic)
J. Sulc, Czech Technical Univ. (Czech Republic)
M. Nemec, Czech Technical Univ. (Czech Republic)

Published in SPIE Proceedings Vol. 6731:
International Conference on Lasers, Applications, and Technologies 2007: Advanced Lasers and Systems
Valentin A. Orlovich; Vladislav Panchenko; Ivan A. Scherbakov, Editor(s)

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