We report a nanosecond-pulse amplification system based on an Yb-doped, 100-μm core, rod-type photonic crystal fiber. Up to 10W of average power with pulse energy of 1 mJ and peak power of 450 kWis obtained at the repetition rate of 10 kHz. The high-power nanosecond pulse has a good pulse shape and spectral characteristics. The usage of rod-type fibers provides a novel structure for nanosecond pulse amplification.
© 2013 Chinese Optics Letters
(060.2320) Fiber optics and optical communications : Fiber optics amplifiers and oscillators
(060.2390) Fiber optics and optical communications : Fiber optics, infrared
(060.5295) Fiber optics and optical communications : Photonic crystal fibers
(060.3510) Fiber optics and optical communications : Lasers, fiber
Fiber Optics and Optical Communications
Jia Yu, Wei Zhao, Yishan Wang, Zhi Yang, Cunxiao Gao, Linquan Niu, and Ting Zhang, "Low-repetition rate, nanosecond, high-power pulse amplifier system based on Yb-doped rod-type fiber," Chin. Opt. Lett. 11, 050601- (2013)