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Proceedings Paper

Laser disk texturing with small bumps
Author(s): Chengwu An; Yongfeng Lu; Yeow Whatt Goh; Weijie Wang
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Paper Abstract

Pulsed green laser with 532 nm wavelength and 270 ns pulse duration was first used to produce a textured zone on a Ni-P disk substrate. Combining a so-called tip-writing method, typical small bumps of interest with bump diameter around 3 micrometer and with bump height about 10 - 20 nm were successfully created. A dependence of bump height on bump diameter was discussed under the case of tip-writing. And the changes of bump shapes with laser pulse energy were studied and bumps with sunflower-like shape were observed under low laser pulse energy.

Paper Details

Date Published: 15 August 1998
PDF: 8 pages
Proc. SPIE 3550, Laser Processing of Materials and Industrial Applications II, (15 August 1998); doi: 10.1117/12.317949
Show Author Affiliations
Chengwu An, National Univ. of Singapore (Singapore)
Yongfeng Lu, National Univ. of Singapore (United States)
Yeow Whatt Goh, National Univ. of Singapore (Singapore)
Weijie Wang, National Univ. of Singapore (Singapore)

Published in SPIE Proceedings Vol. 3550:
Laser Processing of Materials and Industrial Applications II
ShuShen Deng; S. C. Wang, Editor(s)

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