Laser disk texturing with small bumps

Chengwu An; Yongfeng Lu; Yeow Whatt Goh; Weijie Wang

doi:10.1117/12.317949

15 August 1998 Laser disk texturing with small bumps

Chengwu An, Yongfeng Lu, Yeow Whatt Goh, Weijie Wang

Proceedings Volume 3550, Laser Processing of Materials and Industrial Applications II; (1998) https://doi.org/10.1117/12.317949
Event: Photonics China '98, 1998, Beijing, China

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.

Citation Download Citation

Chengwu An, Yongfeng Lu, Yeow Whatt Goh, and Weijie Wang "Laser disk texturing with small bumps", Proc. SPIE 3550, Laser Processing of Materials and Industrial Applications II, (15 August 1998); https://doi.org/10.1117/12.317949

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