Accession Number : AD0784690

Title :   High Density Optical Memory.

Descriptive Note : Quarterly progress rept. Apr-Jun 74,

Corporate Author : ILLINOIS UNIV URBANA COORDINATED SCIENCE LAB

Report Date : JUL 1974

Pagination or Media Count : 16

Abstract : Fourth quarter activities included research into electron coloration techniques, investigation of acousto-optic deflector and optical system parameters, construction of computer interface and memory control electronics and the construction of a mechanical scanner for demonstrating high density digital and audio recording. Results included the discovery that highly pure KCl:NaCl could be electron colored at room temperature. The resulting crystal was stable at a higher temperature than one colored at liquid nitrogen temperature. Difficulties in obtaining satisfactory resolution with the two axis acousto-optic deflector were traced to unsatisfactory lenses in the optical system.

Descriptors :   *Memory devices, *Crystals, Acoustooptics, Colors, Potassium compounds, Chlorides, Interfaces

Subject Categories : Computer Hardware

Distribution Statement : APPROVED FOR PUBLIC RELEASE