Visualization of femtosecond laser-induced stress anisotropy in amorphous and crystalline materials
1 Galatea Lab, STI/IMT École Polytechnique Fédérale de Lausanne, Rue de Maladière 71b, CH-2002 Nuechâtel, Switzerland
2 Shandong University, School of Physics, C Block, Zhixin Building, 27 Shanda Nanlu, Jinan, Shandong, 250100, China
a Corresponding author: firstname.lastname@example.org
In recent years, micro manufacturing with femtosecond lasers has received considerable attention as an efficient technique for producing three-dimensional devices, combining multiple functionalities in a single monolithic substrate. In this manufacturing process, stress-anisotropy resulting from non-ablative laser exposure can have both positive and negative effects on the process out-come. In this work, we present a simple method for visualizing stress anisotropy, combining highly symmetric laser-written patterns with polarization microscopy, as a tool for identifying the various anisotropic contributions to the laser fabrication process.
© Owned by the authors, published by EDP Sciences, 2015
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