Passive harmonic mode-locking of Er-doped fiber laser using CVD-grown few-layer MoS |
Performance of the laser operating at the 20th HML. (a) Output pulse train; (b) RF spectrum measured at 100-kHz RBW, presenting the SMSR at a level of 36.1 dB; (c) Optical spectrum; (d) Autocorrelation trace. |