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Proceedings Paper

High-density substrate incident magneto-optic recording using a solid immersion lens
Author(s): Duane C. Karns; Daniel D. Stancil; Bhagavatula Vijaya Kumar; Tuviah E. Schlesinger
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Paper Abstract

A system demonstrating ultra-high optical recording densities is presented. A substrate incident solid immersion lens was implemented and integrated into a blue wavelength optical spin stand. The spin stand was designed to work without a focus or tracking servo. The optical readout spot size was determined to be approximately 250 nm from the impulse response of the system and was also verified by swept sine wave methods. The system signal-to-noise characteristics were determined by integration of the Fourier decomposition of the readout signal and by autocorrelation techniques. The signal to noise ratio for low frequency data was 23 dB. Finally, domains as small as 80 nm were recorded and readout using this system and the associated signal to noise ratio was shown to be approximately 10 dB.

Paper Details

Date Published: 10 January 2002
PDF: 7 pages
Proc. SPIE 4342, Optical Data Storage 2001, (10 January 2002); doi: 10.1117/12.453384
Show Author Affiliations
Duane C. Karns, Carnegie Mellon Univ. (United States)
Daniel D. Stancil, Carnegie Mellon Univ. (United States)
Bhagavatula Vijaya Kumar, Carnegie Mellon Univ. (United States)
Tuviah E. Schlesinger, Carnegie Mellon Univ. (United States)


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

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