Progress of the Phase-Change Optical Disk Memory

Abstract

Optical memory has two recording modes: the photon-mode as a silver halide photograph and the heat-mode as a laser optical disk. Though laser heat-mode recording has the advantage of environmental stability, it has limitations due to thermal diffusion phenomena, which will be discussed in this paper. Optical disk memory has the unique feature of read-only media performance, which is also compatible with the rewritable function and is different from HDD (hard disk drive) technology.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 2001
Accession Number
ADP012313

Entities

People

  • Hiroaki Yamamoto
  • Noboru Yamada
  • Takashi Kozaki
  • Takeo Ohta
  • Tsuneo Mitsuyu

Tags

DTIC Thesaurus Topics

  • Amorphous Materials
  • Chemical Reactions
  • Data Storage Systems
  • Films
  • Heat Energy
  • High Density
  • Laser Pulses
  • Laser Safety
  • Laser Spots
  • Lasers
  • Materials
  • Measurement
  • Numerical Aperture
  • Phase Change Materials
  • Refractive Index
  • Thermal Diffusion
  • Thermal Expansion

Fields of Study

  • Physics

Readers

  • Computer Science/Computer Engineering/Data Science/Digital Signal Processing.
  • Marine Ecological Systems Migration
  • Molecular Photonics/Laser Physics

Technology Areas

  • Directed Energy