Fig. 5: Mode-locking characteristics.

a Nonlinear reflection curves of irradiated SAQDSSL-G3. b Mode-locking pulse train in the mode-locked laser based on irradiated SAQDSSL-G3. c Autocorrelation trace of the optical pulse for the mode locking with irradiated SAQDSSL, SAQDSSL-G1, SAQDSSL-G3, and SAQDSSL-G5. d Mode-locked optical spectra of irradiated SAQDSSL, SAQDSSL-G1, SAQDSSL-G3, and SAQDSSL-G5. e RF spectra of mode locking with irradiated SAQDSSL-G3. f Long-term stability measurement of mode locking with irradiated SAQDSSL-G3.