Accession Number : AD0718366

Title :   Photochromic Memory for Computer Applications.

Descriptive Note : Annual rept. 15 Feb 70-14 Feb 71,

Corporate Author : ILLINOIS UNIV URBANA COORDINATED SCIENCE LAB

Personal Author(s) : Knoebel,H. W. ; Krone,H. V.

Report Date : FEB 1971

Pagination or Media Count : 6

Abstract : Research was directed toward the development of a high speed, high density, random access, read-write optical memory system. The memory system is based upon the stable yet optically reversible changes in the polarizing properties of M sub A color centers in Potassium Chloride crystals. The accomplishments reported for this initial one year period are classified into the following three main categories: (1) The perfection of techniques for preparing M sub A centers in the crystals, (2) The design and construction of an experimental random access memory system, and (3) The development of a reliable read-out technique that provides an output signal with a good signal to noise ratio. (Author)

Descriptors :   (*MEMORY DEVICES, PHOTOCHROMISM), (*COLOR CENTERS, MANUFACTURING), POTASSIUM COMPOUNDS, LASERS, LIGHT PULSES, DISCRIMINATORS, SIGNAL-TO-NOISE RATIO, POLARIZATION, KERR CELLS, ULTRAVIOLET RADIATION, RELIABILITY(ELECTRONICS)

Subject Categories : Computer Hardware

Distribution Statement : APPROVED FOR PUBLIC RELEASE