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Proceedings Paper

Femtosecond laser milling of ultrathin films of LiNbO3
Author(s): Ophir Gaathon; Avishai Ofan; Jerry Dadap; Alexander Wirthmüller; Lakshmanan Vanamurthy; Sasha Bakhru; Hassaram Bakhru; Richard M. Osgood Jr.
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Paper Abstract

We report femtosecond laser cutting of ultrathin ferroelectric sheets. This process enables one to do rapid patterning of microns-thick films of complex oxides such as LiNbO3, which are obtained via ion-beam exfoliation from standard wafers. Cutting these fragile samples is extremely difficult using standard methods but can be done effectively with ultrafast lasers. To achieve fast writing speed, we employ a high-repetition-rate amplified Ti:sapphire laser system with a pulse peak power of ~100MW. Optimization of the depth and quality of cut were determined as a function of laser pulse energy, crystallographic axes, optical polarization, and pre- and post-ablation chemical treatments.

Paper Details

Date Published: 12 May 2008
PDF: 7 pages
Proc. SPIE 7005, High-Power Laser Ablation VII, 70052Y (12 May 2008); doi: 10.1117/12.785420
Show Author Affiliations
Ophir Gaathon, Columbia Univ. (United States)
Avishai Ofan, Columbia Univ. (United States)
Jerry Dadap, Columbia Univ. (United States)
Alexander Wirthmüller, Columbia Univ. (United States)
Lakshmanan Vanamurthy, Univ. at Albany (United States)
Sasha Bakhru, Univ. at Albany (United States)
Hassaram Bakhru, Univ. at Albany (United States)
Richard M. Osgood Jr., Columbia Univ. (United States)

Published in SPIE Proceedings Vol. 7005:
High-Power Laser Ablation VII
Claude R. Phipps, Editor(s)

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