A passively Q-switched tunable Yb-doped double-clad fiber laser is demonstrated with graphene epitaxially grown on SiC. The spectral tuning of the Q-switched fiber laser is implemented by rotating a quartz plate filter inside the cavity. The central wavelength of the fiber laser can be continuously tuned from 1038.54 to 1056.22 nm. The maximum pulse energy of 0.65 \mu J is obtained at the pump power of 4.08 W, and the corresponding pulse duration and average output power are 1.60 \mu s and 35 mW, respectively.
© 2014 Chinese Optics Letters
(140.3510) Lasers and laser optics : Lasers, fiber
(140.3540) Lasers and laser optics : Lasers, Q-switched
(140.3600) Lasers and laser optics : Lasers, tunable
(140.3538) Lasers and laser optics : Lasers, pulsed
Lasers and Laser Optics
Liqiang Zhang, Zhuang Zhuo, Rusheng Wei, Yunzheng Wang, Xiufang Chen, and Xiangang Xu, "Wavelength tunable passively Q-switched Yb-doped double-clad f iber laser with graphene grown on SiC," Chin. Opt. Lett. 12, 021405- (2014)