Laser cleaning of magnetic disks

Wen Dong Song; Yongfeng Lu; Minghui Hong; Tohsiew Low

doi:10.1117/12.317933

15 August 1998 Laser cleaning of magnetic disks

Wen Dong Song, Yongfeng Lu, Minghui Hong, Tohsiew Low

Proceedings Volume 3550, Laser Processing of Materials and Industrial Applications II; (1998) https://doi.org/10.1117/12.317933
Event: Photonics China '98, 1998, Beijing, China

Abstract

Laser cleaning of disk surfaces was investigated both experimentally and theoretically. It was found that laser cleaning efficiency increases with increasing laser fluence and pulse number. The optimal cleaning conditions can be selected between the two boundaries of damage thresholds and critical cleaning thresholds (100% cleaning). A cleaning model was established for laser-induced removal of particles from substrate surfaces by taking Van der Waals force and cleaning force into account. The theoretical analysis shows that the cleaning force (per unit area) increases with increasing laser fluence, which leads to a higher cleaning efficiency for removing particles from disk surfaces. The experimental results can be explained by the model and simulation.

Citation Download Citation

Wen Dong Song, Yongfeng Lu, Minghui Hong, and Tohsiew Low "Laser cleaning of magnetic disks", Proc. SPIE 3550, Laser Processing of Materials and Industrial Applications II, (15 August 1998); https://doi.org/10.1117/12.317933

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