High speed laser micro-machining using a high repetition rate, high average power femtosecond fiber CPA system
Abstract
We report on ultrashort pulse laser micromachining experiments on different metals at average powers up to 70 W and repetition rates up to 1 MHz. The laser pulses with subpicosecond duration were generated by an ultrafast fiber CPA laser system. The influence of particle shielding and heat accumulation on the ablation efficiency and on the processing quality will be discussed.
