Figure 4

Waveforms of the optical output of the laser diode generated due to the application of electrical pulses with different durations. (a) Waveforms of the driving electrical pulse with a duration of 4.3 ns and the corresponding optical pulse with a duration of 3.0 ns. (b) Waveforms of the driving electrical pulse with a duration of 2.7 ns and the corresponding optical pulse with a duration of 1.3 ns. (c) Waveforms of the driving electrical pulse with a duration of 2.0 ns and the corresponding optical pulse with a duration of 0.7 ns. (d) Waveforms of the driving electrical pulse with a duration of 1.7 ns and the corresponding optical pulse with a duration of 0.3 ns. (e) Waveforms of the driving electrical pulse with a duration of 1.4 ns and the corresponding optical pulse with a duration of around 100 ps. Inset shows an enlarged figure of the waveform of the optical pulse.