Optical recording systems

Optical recording systems, 6, 126 Optical resolution amine metal complexes, 2,25 Oral contraceptives iron deficiency, 6, 764 Orbital angular momentum quenching, 1,262 /-Orbital systems... 

Matsui, F. Optical Recording Systems. In Infrared Absorbing Dyes, Matsuoka, M., Ed., Plenum, 1990. Chapter 10. 

The key component of the optical recording system is the recording medium, which is marked in one step and read in another step with a laser beam. Many materials have been considered for the purpose, including metal-films, organic dyes, dye-loaded polymers, metal-loaded polymers, discontinuous metal films, thermal coloration systems and bilayers (1-19). Tellurium- and gold-based optical disks have been the most widely studied materials to date. 

In order to demonstrate the feasibility of the LIDA concept in high density optical recording systems, a number of dyes have been investigated and the results reported (9,10). In this paper, the results for two of these dyes, Disperse Red II, and Disperse Blue 60 are described in detail. Disperse Red II is manufactured by ICI and Disperse Blue 60 is manufactured by Dupont. Both are derivatives of 1,4-diaminoanthraquinone. Their molecular structures are shown in Figure 2. 

The LIDA concept, discussed above, has demonstrated the potential of organic dyes for use in high density optical recording systems. However, it is apparent that the contrast density is marginal, particularly in the reflection mode. Furthermore, vacuum deposited dyes are also subject to crystallization effects which lead to focussing and archival problems. 

M. Matsui, Optical Recording Systems in Infrared A bsorbingDyes, M. Matsuoka, (ed.), Plenum, New York, 1990. 

Therefore, it is possible to observe the spatial orientation and displacement of the heat release fronts (combustion, deflagration, detonation) and their reciprocal transformation (deflagration/detonation transition, detonation quenching). It is important to find an answer to the question what optical recording systems and in what combination with the known ways of measurements are applicable for solving the assigned problems ... 

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