All-Fiber Regenerative Amplification of Low-Energy 40 ps Pulses from a Gain-Switched Laser Diode at Low Repetition Rates

All-fiber acousto-optic modulator controlled regenerative amplification of low-energy 40 ps pulses from a gain-switched laser diode is demonstrated. Unwanted amplified spontaneous emission is suppressed effectively and gain values of more than 37 dB were achieved.