title: Octave-spanning spectrum generation in tapered silica photonic crystal fiber by Yb:fiber ring laser above 500 MHz.
abstract: We report octave-spanning spectrum generated in a tapered silica photonic crystal fiber by a mode-locked Yb:fiber ring laser at a repetition rate as high as 528 MHz. The output pulses from this laser were compressed to 62 fs. By controlling the hole expansion and core diameter, a silica PCF was tapered to 20 cm with an optimal d/Λ ratio of 0.6. Pulses with the energy of 280 pJ and the peak power of 4.5 kW were injected into the tapered fiber and the pulse spectrum was expanded from 500 to 1600 nm at the level of -30 dB.
authors: State Key Laboratory of Advanced Optical Communication System and Networks, School of Electronics Engineering and Computer Science, Peking University, Beijing 100871, China.
authors: Tongxiao
authors: T
authors: Jiang
authors: Guizhong
authors: G
authors: Wang
authors: Wei
authors: W
authors: Zhang
authors: Chen
authors: C
authors: Li
authors: Aimin
authors: A
authors: Wang
authors: Zhigang
authors: Z
authors: Zhang