Abstract

The present study aimed to apply laser back-writing for fabricating micro-channels. First, a $Q$-switched Nd:YAG laser with fundamental wavelength was used, and a steel target was ablated and evaporated onto a quartz substrate by focusing the laser pulses on the target through the quartz substrate. Then, micro-channels on the quartz were machined with laser-ablated plasma interaction with the substrate. In addition, the surface plasma ablated region was characterized by scanning electron microscopy, a surface profilometer, and energy dispersive x-ray spectrometry. Finally, UV-Vis spectroscopy was used to measure the presence of metal nanoparticles with their typical surface plasmon resonance bands on the interaction area.

© 2021 Optical Society of America

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