title: High-density speed optical near-field recording reading with a pyramidal silicon probe on a contact slider.
abstract: 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.
authors: T
authors: T
authors: Yatsui
authors: M
authors: M
authors: Kourogi
authors: K
authors: K
authors: Tsutsui
authors: M
authors: M
authors: Ohtsu
authors: J
authors: J
authors: Takahashi