High-density speed optical near-field recording reading with a pyramidal silicon probe on a contact slider

We demonstrate high-density-speed phase-change recording-reading by use of a pyramidal silicon structure. The contact slider, which has a pyramidal silicon probe array with height dispersion of less than 10 nm, is fabricated by use of a silicon-on-insulator wafer. By illumination with a laser beam (...

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Bibliographic Details
Published in:Optics letters 2000-09, Vol.25 (17), p.1279-1281
Main Authors: Yatsui, T, Kourogi, M, Tsutsui, K, Ohtsu, M, Takahashi, J
Format: Article
Language:English
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Summary:We demonstrate high-density-speed phase-change recording-reading by use of a pyramidal silicon structure. The contact slider, which has a pyramidal silicon probe array with height dispersion of less than 10 nm, is fabricated by use of a silicon-on-insulator wafer. By illumination with a laser beam (lambda = 830 nm) of one element of the probe array, we find the shortest phase-change mark length and the carrier-to-noise ratio to be 110 nm and 10 dB, respectively, corresponding to a data transmission rate of 2.0 MHz. This rate can be increased to 200 MHz by use of all elements of the probe array.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.25.001279