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Lecture

Student Influence of Pulse Bursts on Laser Matter Interactions

Wednesday (24.06.2020)
16:50 - 17:10 Room 1
Part of:


Short laser pulsed ablation is a common technique integrated into microelectronics manufacturing. With the goal of enhancing material ablation quality and throughput, pulse bursts of ns and ps lasers have shown impressive results significantly increasing ablation rates [1]. The main mechanisms responsible for the improvement in pulse bursts are thought to be the result of the pulse to pulse interactions via plasma incubation or the compounded effects of working at optimal fluence values at MHz effective rates. As flexible electronics Printed Circuit Boards (PCBs) are becoming the leading trend [2], the demand for increasing throughput and quality with new methods is open-ended.

In this presentation, we will explore the results from an experimental setup consisting of pump-probe microscopy and several photodiodes and photomultiplier tubes designed to capture this process at the nanosecond level. The results illustrate the expansion and time dependency of plasma emissions and plume expansion from laser ablation in PCB stacked materials. The information displayed here significantly improves the means of optimizing temporal pulse shaping to compound the effects produced in pulse bursts.

Speaker:
Ph.D. John Linden
Bar Ilan University
Additional Authors:
  • Dr. Yuval Berg
    Orbotech
  • Dr. Sharona Cohen
    Orbotech
  • Prof. Zvi Kotler
    Orbotech
  • Prof. Zeev Zalevsky
    Bar-Ilan Univercity

Dateien

Category Short file description File description File Size
Extended Abstract Abstract for lecture to be given Plasma emission and plume expansion of pulse bursts. 202 KB Download
Extended Abstract Abstract for lecture to be given Effects of pulsed bursts on laser ablation mechanisms such as plasma emission and plume expansion 202 KB Download