Fig. 4: Dynamics of GSQSML with a decreased SC length altered by changing the pump power. | Light: Science & Applications

Fig. 4: Dynamics of GSQSML with a decreased SC length altered by changing the pump power.

From: Dynamic gain driven mode-locking in GHz fiber laser

Fig. 4

a Experimental evolution of QSML with a fixed fundamental repetition rate of 21 GHz at different levels of pump power. The results are recorded by the standard real-time oscilloscope. Here, the GHz fiber laser evolves from RSQSML (right) to GSQSML (left) as the pump power increases from 77.5 mW to 80 mW. b Closeup of the experimental GSQSML evolution (top) and corresponding simulation (bottom). c Experimental (top) and simulated (bottom) phase space orbits of b, delayed by \({N}_{D}=\) 125 and 55, respectively. d Time-lens magnification measurement of GSQSML. The top panel shows the temporal evolution of the GSQSML signal, while the bottom panel illustrates the variation of its pulsewidth. Here, the SC length is 1.4 ns. Wid. is short for pulse width. e Simulation of GSQSML corresponding to d

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