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Proceedings Paper

Observing laser ablation dynamics with sub-picosecond temporal resolution
Author(s): Shuntaro Tani; Yohei Kobayashi
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Paper 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.

Paper Details

Date Published: 18 April 2017
PDF: 2 pages
Proc. SPIE 10252, Optical Manipulation Conference, 102520H (18 April 2017); doi: 10.1117/12.2276931
Show Author Affiliations
Shuntaro Tani, The Univ. of Tokyo (Japan)
Yohei Kobayashi, The Univ. of Tokyo (Japan)

Published in SPIE Proceedings Vol. 10252:
Optical Manipulation Conference
Takashige Omatsu, Editor(s)

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