Nanosecond laser pulses for aluminum and copper drilling
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 p...
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| פורמט: | Article |
| שפה: | English |
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University of Baghdad
2018-10-01
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| סדרה: | Iraqi Journal of Physics |
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| גישה מקוונת: | https://ijp.uobaghdad.edu.iq/index.php/physics/article/view/26 |
| סיכום: | 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.
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| ISSN: | 2070-4003 2664-5548 |