We demonstrate a Q-switched Ytterbium-doped double-cladding fiber laser based on single-walled carbon nanotubes as saturable absorbers. The pure single-walled carbon nanotubes were directly deposited on the one end of the Ytterbium-doped double-cladding fiber by optically driven deposition method. A linear-cavity was employed and a 1.5m long Ytterbium-doped double-cladding fiber played as the gain fiber. The Ytterbium-doped double-cladding fiber was pumped by a 976-nm fiber coupled diode laser. The maximum output power of 1.3W was obtained at the wavelength of 1070nm. The pulse-repetition rates were tuned from 9.1 KHz to 60 KHz when the pump powers were changed from 1.85W to 10W and the shortest pulse duration was around 600ns.
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Zhenhua Yu ; Yanrong Song ; Cuicui Tian ; Jian Li ; Xiao Zhang, et al.
Q-switched Yb-doped double cladding fiber laser with single wall carbon nanotube saturable absorber
", Proc. SPIE 8551, High-Power Lasers and Applications VI, 855115 (November 29, 2012); doi:10.1117/12.999289; http://dx.doi.org/10.1117/12.999289