Observing laser ablation dynamics with sub-picosecond temporal resolution

Shuntaro Tani; Yohei Kobayashi

doi:10.1117/12.2276931

18 April 2017 Observing laser ablation dynamics with sub-picosecond temporal resolution

Shuntaro Tani, Yohei Kobayashi

Proceedings Volume 10252, Optical Manipulation Conference; 102520H (2017) https://doi.org/10.1117/12.2276931
Event: SPIE Technologies and Applications of Structured Light, 2017, Yokohama, Japan

Abstract

Laser ablation is one of the most fundamental processes in laser processing, and the understanding of its dynamics is of key importance for controlling and manipulating the outcome. In this study, we propose a novel way of observing the dynamics in the time domain using an electro-optic sampling technique. We found that an electromagnetic field was emitted during the laser ablation process and that the amplitude of the emission was closely correlated with the ablated volume. From the temporal profile of the electromagnetic field, we analyzed the motion of charged particles with subpicosecond temporal resolution. The proposed method can provide new access to observing laser ablation dynamics and thus open a new way to optimize the laser processing.

Citation Download Citation

Shuntaro Tani and Yohei Kobayashi "Observing laser ablation dynamics with sub-picosecond temporal resolution", Proc. SPIE 10252, Optical Manipulation Conference, 102520H (18 April 2017); https://doi.org/10.1117/12.2276931

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