CFRP (Carbon Fiber-Reinforced Plastic) has attractive features like high-durability, high-strength and light-weight. We have been investigating micromachining of CFRP by ultra-short laser pulses in order to minimize material damages and HAZ. The laser system used in this study was a commercially available Ti:Sapphire laser (Spectra Physics, Hurricane). Various samples of CFRP were supplied by Japanese leading manufacturing companies. Optimizations of the laser parameters were investigated.

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