&lt;title&gt;Ageing Characteristics Of Digital Optical Recording (DOR) Media&lt;/title&gt;

Some characteristics of reversible phase-change optical data storage in TeSeSb alloys are given. High signal-to-noise ratios are reached at low recording energies. Upon passage of an oblong scanning laser spot, erasure occurs by growth from the crystalline surroundings of the amorphous effects at growth velocities of up to 5 cm/s. Isothermal transformation appears to be dominated by phase separation and diffusion processes. The tradeoff between long-term stability and erasure time varies with alloy composition and, for some alloys, attractive properties with respect to data retention and erasure times are found.

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Device for measurement of microobject linear dimension

Kostruba¹,

Viokh²

Quality Measurement: The Indispensable Bridge Between Theory and Reality (No Measurements? No Science! Joint Conference - 1996:

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Device is intended for the experimental obtaining of intensity distribution in the section of beam diffracted from pre-grooved surface. It simulates the work of laser read-out systems as at the reproduction as in the static state. It is possible to estiimate the influence of optical system parameters on the values of reproduction-, servo-signals and sig;nal/noise ratios. This device may be used for the measuring of relief microobject dimensions as well as for lhe optimization of optical channel and optical disc parameters and for the design of optical discs with the higher information density. 277 0-7803-331 2-8/96/$5.0001996 IEEE

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<title>Ageing Characteristics Of Digital Optical Recording (DOR) Media</title>

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Optical Methods of Information Storage

Optical Methods of Information Storage

Phase-change optical recording in TeSeSb alloys

Device for measurement of microobject linear dimension

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