A pulsed and quasi-CW actively mode-locked Nd:phosphate glass oscillator

Active mode locking was realized in pulsed and quasi-CW modes with an Nd:phosphate glass of low thermooptical coefficient as an active medium. The quasi-CW current of rectangular waveform was supplied by an inhomogeneous LC forming network. Experimental results on the mode-locked pulse train, pulsewidth, spectral linewidth, relaxation oscillation, and gain Q -switching are given.