Selective generation of individual Raman Stokes lines using dissipative soliton resonance pulses
Pumping by rectangular shaped dissipative soliton resonance (DSR) pulses at 1030 nm, selective excitations of Raman Stokes lines of up-to 3rd order with extinction ratio of 8 dB and 5th order with extinction ratio of 4 dB are demonstrated experimentally. The rectangular DSR pulses are generated from a dual-amplifier ytterbium-doped figure-eight mode-lock laser constructed by 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 30 W to 200 W respectively for two different lengths of the nonlinear amplification loop mirror inside the cavity. High-frequency components are found correspond to pulse parts in trailing edge when two bandpass filters are used to separate propagated pulse. Consequently, it provides an all-fiber technique to achieve selective excitation of the Raman shift by adjusting the peak power of DSR pulse.
作者单位：National University of Defense Technology
National University of Defense Technology
Xu He,chen Sheng-Ping,Jiang zongfu. Selective generation of individual Raman Stokes lines using dissipative soliton resonance pulses[J].High Power Laser Science and Engineering,,():.