The effect of cavity length on picosecond pulse generation with highly rf modulated AlGaAs double heterostructure lasers

We report the generation of picosecond pulses with oxide-isolated-stripe, double heterostructure GaAlAs laser diodes of varying lengths. A pulse width of 15 ps at a repetition frequency of 1 GHz is achieved with a 60-μm-long device. The experiments indicate a linear relation between pulse width and laser length.