Accession Number : AD0765391

Title :   High Density Optical Memory.

Descriptive Note : Annual rept., 1 Jul 72-30 Jun 73.

Corporate Author : ILLINOIS UNIV URBANA COORDINATED SCIENCE LAB

Report Date : JUL 1973

Pagination or Media Count : 16

Abstract : The continued development of the photochomic memory has resulted in the design and construction of a second generation KCl memory system and an enhancement of the performance of the original system. Apparatus for coloring memory crystals by means of electron bombardment has been developed making possible the matching of crystal thickness to the depth of field of the focusing lens. Studies of KCl:NaCl properties indicate that thermo-electric cooling units may be used to simplify the cryostat units for housing the crystal. In the immediate future, the control logic will be integrated with the new memory. This will facilitate the storage and retrieval of a large number of bits and allow interfacing the memory with a computer for long term, high speed reliability tests.

Descriptors :   (*DATA STORAGE SYSTEMS, OPTICAL EQUIPMENT), (*MEMORY DEVICES, FEASIBILITY STUDIES), POTASSIUM COMPOUNDS, CHLORIDES, LOGIC CIRCUITS, SODIUM COMPOUNDS, FLUORIDES, X RAYS, COLOR CENTERS, ELECTRON IRRADIATION, SODIUM CHLORIDE

Subject Categories : Computer Hardware

Distribution Statement : APPROVED FOR PUBLIC RELEASE