Comatic Aberration in a Solid Immersion Mirror

Brian R. Knight; A. V. Itagi; T. Rausch; C. Mihalcea; K. Pelhos; T.E. Schlesinger

doi:10.3379/jmsjmag.30.637

Journal of the Magnetics Society of Japan

Online ISSN : 1880-4004
Print ISSN : 0285-0192
ISSN-L : 0285-0192

Contributed Paper

Comatic Aberration in a Solid Immersion Mirror

Brian R. Knight, A. V. Itagi, T. Rausch, C. Mihalcea, K. Pelhos, T.E. Schlesinger

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Keywords: comatic aberration, HAMR, solid immersion mirror, disk head

JOURNAL OPEN ACCESS

2006 Volume 30 Issue 6_2 Pages 637-640

DOI https://doi.org/10.3379/jmsjmag.30.637

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Abstract

The Sold Immersion Mirror(SIM) is a device capable of producing the small light spot required for Heat Assisted Magnetic Recording(HAMR). HAMR is a hard disk technology that incorporates a laser for heating a subwavelength sized region of the recording media. Here we measure the effects of comatic aberration on the focused spot of the SIM and compare the results with a recently published model and ray optics.

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