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Micromachines 2015, 6(12), 1914-1922; doi:10.3390/mi6121462

High Speed Pump-Probe Apparatus for Observation of Transitional Effects in Ultrafast Laser Micromachining Processes

Institute of Photonic Technologies, Friedrich-Alexander-University Erlangen-Nuremberg, Konrad-Zuse-Straße 3, 91052 Erlangen, Germany
Erlangen Graduate School in Advanced Optical Technologies (SAOT), Friedrich-Alexander-University Erlangen-Nuremberg, Paul-Gordan-Straße 6, 91052 Erlangen, Germany
Kazan National Research Technical University, Karl Marx Street 10, 420111 Kazan, Russia
These authors contributed equally to this work.
Author to whom correspondence should be addressed.
Academic Editor: Stefan Dimov
Received: 6 November 2015 / Revised: 23 November 2015 / Accepted: 30 November 2015 / Published: 7 December 2015
(This article belongs to the Collection Laser Micromachining and Microfabrication)
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A pump-probe experimental approach has been shown to be a very efficient tool for the observation and analysis of various laser matter interaction effects. In those setups, synchronized laser pulses are used to create an event (pump) and to simultaneously observe it (probe). In general, the physical effects that can be investigated with such an apparatus are restricted by the temporal resolution of the probe pulse and the observation window. The latter can be greatly extended by adjusting the pump-probe time delay under the assumption that the interaction process remains fairly reproducible. Unfortunately, this assumption becomes invalid in the case of high-repetition-rate ultrafast laser material processing, where the irradiation history strongly affects the ongoing interaction process. In this contribution, the authors present an extension of the pump-probe setup that allows to investigate transitional and dynamic effects present during ultrafast laser machining performed at high pulse repetition frequencies. View Full-Text
Keywords: imaging ultrafast phenomena; ultrafast laser glass processing; high-speed imaging imaging ultrafast phenomena; ultrafast laser glass processing; high-speed imaging

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Alexeev, I.; Heberle, J.; Cvecek, K.; Nagulin, K.Y.; Schmidt, M. High Speed Pump-Probe Apparatus for Observation of Transitional Effects in Ultrafast Laser Micromachining Processes. Micromachines 2015, 6, 1914-1922.

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