REAL-TIME TRACKING OF THE HEAD-DISK SEPARATION USING LASER HETERODYNEINTERFEROMETRY .1. INSTRUMENTATION

Authors
VEILLARD DH GANAPATHI SK SMITH PW
Citation
Dh. Veillard et al., REAL-TIME TRACKING OF THE HEAD-DISK SEPARATION USING LASER HETERODYNEINTERFEROMETRY .1. INSTRUMENTATION, IEEE transactions on magnetics, 29(6), 1993, pp. 3909-3911
Citations number
5
Categorie Soggetti
Engineering, Eletrical & Electronic","Physics, Applied
Journal title
IEEE transactions on magnetics → ACNP
ISSN journal
00189464
Volume
29
Issue
6
Year of publication
1993
Part
2
Pages
3909 - 3911
Database
ISI
SICI code
0018-9464(1993)29:6<3909:RTOTHS>2.0.ZU;2-F
Abstract
The design aspects of a new optoelectronic probe that produces a real- time, DC coupled readout of the out-of-plane component of a flying hea d position relative to the disk are presented. The prototype implement ation achieves nanometer resolution in a 50 kHz bandwidth. A separate paper reports simulations and experiments that illustrate some of the application possibilities of this type of probe.