Fig. 1. Experimental device of tunable multimode QML laser based on NALM structure

Fig. 2. Multimode spectrum at CW state. (a) Single wavelength spectrum and beam profile; (b) Multiwavelength spectrums

Fig. 3. Multimode QML pulse and RF spectrum. (a) Pulse train; (b) Single pulse; (c)10 M RF spectrum; (d) Single RF spectrum

Fig. 4. QML pulse spectrum. (a) Spectrum and beam profile; (b) Tunable spectrum

Fig. 5. Laser output characteristics at different pump power. (a) Power curves and beam profiles of different output states of the laser; (b) QML pulse characteristics; (c) QML pulse repetition rate and pulse width; (d) QML pulse average output power and single pulse energy

Fig. 6. Output characteristics of multiwavelength QML pulses. (a) Spectrum and beam profile of dual and three-wavelength QML pulses; (b) Dual and three-wavelength QML pulses; (c) Output spectrum of dual-wavelength QML pulses; (d) Output power of dual-wavelength QML pulses; (e) Train of dual-wavelength QML pulses