摘要
Pumped by rectangular-shaped dissipative soliton resonance(DSR)pulses at 1030 nm,selective excitations of Raman Stokes lines of up to third order with extinction ratios of 8 d B and fifth order with extinction ratios of 4 dB are demonstrated experimentally.The rectangular DSR pulses are generated from a dual-amplifier ytterbium-doped figureof-eight mode-locked laser constructed using all 10μm-core-diameter large-mode-area fibers.By varying the two pump powers,the peak power of the output DSR pulses can be continuously tuned from 10 W to 100 W and from 30 W to200 W,respectively,for two different lengths of the nonlinear amplifying loop mirror inside the cavity.High-frequency components are found to correspond to parts of the pulse in the trailing edge when two bandpass filters are used to separate the propagated pulse.Consequently,it provides an all-fiber technique to achieve selective excitation of the Raman shift by adjusting the peak power of the DSR pulse.
Pumped by rectangular-shaped dissipative soliton resonance(DSR) pulses at 1030 nm, selective excitations of Raman Stokes lines of up to third order with extinction ratios of 8 d B and fifth order with extinction ratios of 4 d B are demonstrated experimentally. The rectangular DSR pulses are generated from a dual-amplifier ytterbium-doped figureof-eight mode-locked laser constructed using all 10 μm-core-diameter large-mode-area fibers. By varying the two pump powers, the peak power of the output DSR pulses can be continuously tuned from 10 W to 100 W and from 30 W to200 W, respectively, for two different lengths of the nonlinear amplifying loop mirror inside the cavity. High-frequency components are found to correspond to parts of the pulse in the trailing edge when two bandpass filters are used to separate the propagated pulse. Consequently, it provides an all-fiber technique to achieve selective excitation of the Raman shift by adjusting the peak power of the DSR pulse.
基金
supported by the National Natural Science Foundation of China (NSFC) (No. 61235008)
the National High Technology Research and Development Program of China (No. 2015AA021101)
