Accession Number:

AD0744626

Title:

An Experimental, High Density Optical Memory. Part II: Electron Spin Dependent Trapping and Tunneling Processes in KCl and KCl:NaCl,

Descriptive Note:

Corporate Author:

ILLINOIS UNIV URBANA COORDINATED SCIENCE LAB

Personal Author(s):

• Burt,James Vinton

Report Date:

1972-05-01

Pagination or Media Count:

139.0

Abstract:

An experimental, high density optical memory using the MA center in KClNaCl has been built to study the application of color centers as read, write, and erase computer bulk memories. The MA center is employed as a binary indicator by making use of its ability to reorientate in the KClNaCl lattice when excited with either vertically or horizontally polarized 531 nm light. Information is read out with circularly polarized 531 nm light. Studies on the initial system indicate that both writing times of less than 4 microsecond duration and packing densities exceeding 10 to the 6th power bitssq cm will be possible in a fully developed system. Studies have also been made on the MA center, an ionized MA center involved in the reorientation process of the MA center. Author

Descriptors:

• (*MEMORY DEVICES
• PHOTOCHROMISM)
• (*COLOR CENTERS
• PHOTOCONDUCTIVITY)
• POTASSIUM COMPOUNDS
• CHLORIDES
• SODIUM CHLORIDE
• POLARIZATION
• FOCUSING
• HEATING
• TUNNELING(ELECTRONICS)
• BAND THEORY OF SOLIDS

Subject Categories:

• Computer Hardware
• Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE