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Nanosecond laser pulses for aluminum and copper drilling | ||
| Iraqi Journal of Physics | ||
| Article 1, Volume 16, Issue 36, 2018, Pages 47-52 | ||
| Authors | ||
| Sumaya Jeleel; Walid K. Hamoudi | ||
| Abstract | ||
| Nd:YAG laser pulses of 9 nanosecond pulse duration and operating wavelength at 1.06 µm, were utilized to drill high thermal conductivity and high reflectivity aluminum and copper foils. The results showed a dependence of drilled holes characteristics on laser power density and the number of laser pulses used. Drilled depth of 74 ϻm was obtained in aluminum at 11.036×108 W/cm2 of laser power density. Due to its higher melting point, copper required higher laser power density and/or larger number of laser pulses to melt, and a maximum depth of 25 µm was reached at 13.46×108 W/cm2 using single laser pulse. | ||
| Keywords | ||
| Nanosecond laser pulses; laser drilling; Metals | ||
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