Holographic patterned micro-drilling using amplitude masks

Authors

Edelyn Reyes ⋅ PH National Institute of Physics, University of the Philippines Diliman
Eloieda Famador ⋅ PH National Institute of Physics, University of the Philippines Diliman
Jenny Aggangan ⋅ PH National Institute of Physics, University of the Philippines Diliman
Vincent Ricardo Daria ⋅ PH National Institute of Physics, University of the Philippines Diliman

Abstract

We illustrate a patterned micro-drilling technique using nanosecond pulsed laser and holographic projection of patterned light patterns. In this method, an incident Gaussian beam from an Nd:YAG laser illuminates an amplitude mask located at the back focal plane of a focusing lens. The periodic twodimensional mask pattern generates multi-foci projection corresponding to the zeroth and high diffraction orders at the focal plane. Micron scale drilling via laser ablation is observed at the target (i.e. aluminum sheet) located at the focus. We evaluate the ablation process by comparing the laser ablation pattern with the simulated Fourier transform of the mask. Furthermore, optimum energy and shot settings for ablation of aluminum are also identified.

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Issue

2007: Proceedings of the 25th Samahang Pisika ng Pilipinas Physics Congress

Article ID

SPP-2007-PB-36

Section

Poster Session PB

Published

2007-10-24

How to Cite

[1]

E Reyes, E Famador, J Aggangan, and VR Daria, Holographic patterned micro-drilling using amplitude masks, Proceedings of the Samahang Pisika ng Pilipinas 25, SPP-2007-PB-36 (2007). URL: https://proceedings.spp-online.org/article/view/SPP-2007-PB-36.