The singular point of the dissipative soliton mode-locked fiber laser is demonstrated experimentally. Mode-locked pulses are severely disturbed under certain pump power. The peak-valley (P-V) of the output power reaches up to 26.5% under the pump power of 918mW. However, mode-locked fiber laser can operate stably under higher or lower pump power. A numerical model based on nonlinear Schrödinger equation (NLSE) is established. And the singular point of the mode-locked state is theoretically proved.
The thermal problems of CPS and YDF were studied. And the thermal management technologies are developed separately to the problems. Experimental results showed that the thermal management technologies worked well.
A novel method has been proposed to suppress transverse stimulated Raman scattering or transverse
stimulated Brillouin scattering by processing the frequency convector edges into arrises. The mode
analysis indicates that the residual reflection at the edges decreases rapidly with the decrease of arris
angle and the direction of the ray finally reflected back has an angle with the surface of convector. So
with this method transverse stimulated Raman scattering or transverse stimulated Brillouin scattering
can be suppressed.
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