Tunable GHz Repetitive ps Pulse InGaN Laser

Using sinusoidal waveform, an InGaN laser unit which incorporated a 50-$\Omega$ impedance-matching unit was used to generate $<$70-ps pulses with a repetition frequency ranging from 800 MHz to 3.0 GHz. At 1.0 GHz, the pulses with a pulsewidth of 31 ps and a peak power of $>$450 mW were obtained using $+$ 27 dBm of RF power. Tuning characteristics of this gain-switching laser were studied.