Gain-switching of laser diodes might be the most convenient way to generate picosecond laser pulses. The outstanding features of gain-switched laser diodes are a rich choice of wavelength and an easy synchronization to an external trigger source. To broaden the field of applications we pushed the peak power to the 10 W level while maintaining the essential characteristics of the laser source. In a master oscillator power amplifier (MOPA) configuration a tapered amplifier is used to increase the output from 10 mW to 160 mW average power. Second harmonic generation is demonstrated in a single pass setup, which results in 6.5 mW average power at 532 nm with a repetition rate of 80 MHz.© (2005) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.