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Proceedings Paper

Optical flying head for a near-field recording system
Author(s): Takashi Mizuno; Taro Hitosugi; Naoto Kojima; Shigeru Yamazaki; Kageyasu Sako; Kenjiro Watanabe
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Paper Abstract

We report a novel optical head based on the combination of a solid immersion lens and fiber optics with a flying slider for a practical near-field recording system. The configurations proposed here, are capable of near-field recording using magneto-optical detection and phase-change detection. 50nm of the flying height of the optical slider was obtained at a linear velocity of 10m/s. The effective numerical aperture of the SIL itself was 1.24 and the rms value of the wavefront aberration of the SIL was 0.0367 lambda. This rms value can realize an accurate readout at a practical level. Further, the carrier to noise ratio for the mark length of 0.2 micrometers on a spin stand was about 41 dB. This result indicates that a SIL can be combined with a flying slider for near-field recording.

Paper Details

Date Published: 10 January 2002
PDF: 8 pages
Proc. SPIE 4342, Optical Data Storage 2001, (10 January 2002); doi: 10.1117/12.453433
Show Author Affiliations
Takashi Mizuno, Sony Corp. (Japan)
Taro Hitosugi, Sony Corp. (Japan)
Naoto Kojima, Sony Corp. (Japan)
Shigeru Yamazaki, Sony Corp. (Japan)
Kageyasu Sako, Sony Corp. (Japan)
Kenjiro Watanabe, Sony Corp. (Japan)


Published in SPIE Proceedings Vol. 4342:
Optical Data Storage 2001

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