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Burst Machining of Copper and Stainless Steel with IceFyre® Picosecond Laser for Enhanced Material Removal Rates

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Burst Machining of Copper and Stainless Steel with IceFyre® Picosecond Laser for Enhanced Material Removal Rates

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In a series of experiments, Spectra-Physics applications engineers characterized the ablation efficiency in bulk copper and stainless steel materials for a variety of burst outputs from the IceFyre 1064-50 laser. The experiment consisted of pocket milling volumetric regions in bulk copper and 304 stainless steel plates using various experimental conditions, measuring the depth of the milled pockets, and determining volume ablation rates and efficiencies. In addition, quality assessment of the milled surfaces was performed using an optical microscope. Variables including the number of pulses in the burst as well as the intra-burst pulse separation time were explored. For all combinations of burst output, the average power was constant at ~43 W after the AOM. Therefore, when comparing a 4-pulse burst with a 2-pulse burst, the pulse energy of each of the 4 pulses is half that of the individual pulses in the 2-pulse burst

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