Laser-induced-plasma-assisted ablation for glass microfabrication

Minghui Hong; Koji Sugioka; Ding Jiang Wu; L. L. Wong; Yongfeng Lu; Katsumi Midorikawa; Tow Chong Chong

doi:10.1117/12.446603

29 October 2001 Laser-induced-plasma-assisted ablation for glass microfabrication

Minghui Hong, Koji Sugioka, Ding Jiang Wu, L. L. Wong, Yongfeng Lu, Katsumi Midorikawa, Tow Chong Chong

Proceedings Volume 4595, Photonic Systems and Applications; (2001) https://doi.org/10.1117/12.446603
Event: International Symposium on Photonics and Applications, 2001, Singapore, Singapore

Abstract

Glass is a hard transparent material with many applications in Photonics and advanced display industries. It is a high challenge to achieve crack-free glass microfabrication due to its special material characteristics. Laser-induced-plasma- assisted ablation is applied in this study to get the high quality glass microfabrication. In this processing, the laser beam goes through the glass substrate first and then irradiates on a solid target behind. For laser fluence above ablation threshold for the target, the generated plasma flies forward at a high speed. At a small target-to-substrate distance, there are strong interactions among laser light, target plasma and glass materials at the rear side of the substrate. Light absorption characteristic at the glass substrate is modified since the plasma may soften and dope into the glass in the interaction area. To have a better understanding of this processing, signal diagnostics are carried out to study the dynamic interaction. It is found that glass microfabrication is closely related to laser fluence, target-to-substrate distance, laser spot size and laser beam scanning speed. With proper control of the processing parameters, glass surface marking patterning and cutting can be achieved. With different materials as the targets, color marking of glass substrate can be obtained.

Citation Download Citation

Minghui Hong, Koji Sugioka, Ding Jiang Wu, L. L. Wong, Yongfeng Lu, Katsumi Midorikawa, and Tow Chong Chong "Laser-induced-plasma-assisted ablation for glass microfabrication", Proc. SPIE 4595, Photonic Systems and Applications, (29 October 2001); https://doi.org/10.1117/12.446603

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