Accession Number:

ADP011842

Title:

Three-Dimensional Memory

Descriptive Note:

Corporate Author:

SHIZUOKA UNIV HAMAMATSU (JAPAN) FACULTY OF ENGINEERING

Personal Author(s):

Report Date:

2000-01-01

Pagination or Media Count:

10.0

Abstract:

Three-dimensional optical memory with photorefractive materials is discussed for ultra-high densitycapacity memory exceeding the classical limit of a conventional optical recording system. Bit data are recorded as highly localized refractive index variations in three-dimensional volume using a focused laser beam. We show recording and reading results using various recording materials and optical configurations. A multi-structured optical recording medium using a photoisomerization polymer and a transparent films has been developed for reflection confocal reading. Two-photon recording is also demonstrated.

Descriptors:

• *MEMORY DEVICES
• *OPTICAL STORAGE
• OPTICAL EQUIPMENT
• VOLUME
• CAPACITY(QUANTITY)
• TRANSPARENCE
• LASER BEAMS
• JAPAN
• THREE DIMENSIONAL
• CONFIGURATIONS
• HIGH DENSITY
• PHOTONS
• FOCUSING
• RECORDING SYSTEMS
• PHOTOREFRACTIVE MATERIALS
• READING

Subject Categories:

• Computer Systems
• Recording and Playback Devices
• Electricity and Magnetism

Distribution Statement:

APPROVED FOR PUBLIC RELEASE