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15 August 1998 Laser disk texturing with small bumps
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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.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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);


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