Optical Data Storage

Cover -- Contents -- 1. Introduction -- 1.1. A brief overview of optical storage systems -- 1.2. The basics of optical storage -- 1.2.1. Optical drive layout -- 1.2.2. Basic principles of optical data storage -- 1.2.3. Optical storage roadmap -- 1.2.4. Optical media -- 1.2.5. Phase-change media -- 1.3. Scope of this book -- 1.4. References Chapter 1 -- 2. Theoretical aspects of phase-change alloys -- 2.1. Introduction -- 2.2. Glass formation and the amorphous phase -- 2.3. Crystallization -- 2.3.1. Crystallization theory -- 2.3.2. Crystallization of amorphous marks in a phase-change disc -- 2.4. Classes of phase-change materials -- 2.4.1. Class I: Crystallization by nucleation and growth -- 2.4.2. Class II: Crystallization dominated by crystal growth -- 2.5. Emerging directions in phase-change research -- 2.6. References of chapter 2 -- 3. Thermal modelling of phase-change recording -- 3.1. Multi-layer thermal model -- 3.1.1. Heat diffusion in thin layers -- 3.1.2. Heat conduction at microscale -- 3.1.3. Modelling of heat diffusion in multi-layer recording stacks -- 3.1.4. Mark-formation and erasure model -- 3.2. Optical parameters of phase-change recording films -- 3.2.1. Optical properties of thin films -- 3.2.2. Stack design -- 3.3. Thermal conductivity of thin films -- 3.3.1. In situ laser methods -- 3.3.2. Melt-threshold method -- 3.3.3. Thermal conductivity results -- 3.4. Determination of crystallization parameters -- 3.4.1. Isothermal measurements -- 3.4.2. Time-resolved static tester measurements -- 3.5. Mark formation and erasure results -- 3.6. Effect of groove shape on direct heating -- 3.6.1. Groove structure of phase-change discs -- 3.6.2. Land versus groove recording -- 3.6.3. Groove-only recording -- 3.7. References of chapter 3 -- 4. Data recording characteristics -- 4.1. Data recording -- 4.1.1. Recording, erasing and direct-overwriting of marks -- 4.1.2. Pulse trains -- 4.1.3. Erase of marks -- 4.1.4. Write-erase sequence -- 4.1.5. Write strategy types -- 4.2. Quality of recorded data -- 4.2.1. Material-limited run-length jitter -- 4.2.2. Overwrite stability -- 4.2.3. Repeated read stability -- 4.3. Effect of multi-track recording -- 4.3.1. Thermal cross-write -- 4.3.2. Optical cross-talk -- 5. Recording media -- 5.1. Dual-layer media and recording -- 5.1.1. Data capacity increase -- 5.1.2. Layout of dual-layer media -- 5.1.3. Optical design of dual-layer media -- 5.1.4. Mark formation -- 5.1.5. Transmittance difference -- 5.2. Media for high-speed phase-change recording -- 5.2.1. Introduction to speed race -- 5.2.2. Materials for high-speed recording -- 5.2.3. Optical and thermal design o.