18 September 1996 Optical flying-height testing of magnetic read-write heads
Author Affiliations +
Proceedings Volume 2782, Optical Inspection and Micromeasurements; (1996) https://doi.org/10.1117/12.250775
Event: Lasers, Optics, and Vision for Productivity in Manufacturing I, 1996, Besancon, France
Quality control in the production of rigid disk drives depends in part on accurate metrology of the read-write head. We review the established technologies for measuring the distance or flying height between the head and the rotating disk, and propose a new instrument based on polarization interferometry. The new instrument has excellent repeatability, high sensitivity at low flying height and in situ determination of the phase change on reflection.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Peter J. de Groot, Peter J. de Groot, Leslie L. Deck, Leslie L. Deck, James A. Soobitsky, James A. Soobitsky, James F. Biegen, James F. Biegen, } "Optical flying-height testing of magnetic read-write heads", Proc. SPIE 2782, Optical Inspection and Micromeasurements, (18 September 1996); doi: 10.1117/12.250775; https://doi.org/10.1117/12.250775


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