Figure 3
From: Quasi mode-locking of coherent feedback random fiber laser
Dynamical spatio-temporal and frequency characteristics of the coherent feedback Q-switched laser correspond to pump power of 59.61 mW and statistical analysis of the frequency components versus pump power.
(a) Spatio-temporal intensity dynamics of mode-locking regime for cascaded Q-switched events for pump power of 59.61 mW. (b) Radio frequency spectrum of the pulse series for time scale of 4 ms for pump power of 59.61 mW. (c) Map of the radio frequency spectrum evolution for cascaded Q-switched events for pump power of 59.61 mW. (d) Ratio of low frequency components appeared in mode-locking regime as a function of pump power. (e) Summary of all the high frequency components at different pump power.
