Accession Number : AD0912785

Title :   Magneto-Optic Interactions.

Descriptive Note : Final rept. 6 Mar 72-Mar 73,

Corporate Author : RCA LABS PRINCETON NJ

Personal Author(s) : Shahbender, Rabah ; Akselrad, Aline L. ; Druguet, John L. ; Onyshkevych, Lubomyr S.

Report Date : AUG 1973

Pagination or Media Count : 91

Abstract : The most promising approaches for bubble domain sensing are (1) magneto-resistive detectors (MRD), and (2) magneto-optical detectors (MOD). These two types of detectors are the subject of the report. For MOD a garnet film with high Faraday Rotation (FR) is desirable. Data are presented showing the effect of Bi-doping on the FR of YIG. Data are also presented on the FR of a large number of other rare earth iron garnets. The data indicate that a lens-less all-solid-state MOD is feasible using an edge-emitting light-emitting diode of GaAs:Al and a bubble film of Bi3-2xCa2xVxFe5-x012 (x approximately 1.1) grown on a nonmagnetic garnet substrate such as Sm3Ga5012:In, or a Bi-containing LPE film on a Gd3Ga5012 substrate. For a MRD, the advantageous design is one that utilizes a chevron expander with the detector formed by interconnecting the chevrons in a column to form a staggered continuous circuit. The permalloy thickness for the detector should be the same as that for the propagation elements. (Author)

Descriptors :   (*MAGNETOOPTICS, INTERACTIONS), DETECTORS, GALLIUM ARSENIDES, GARNET, FILMS, DOPING, ALUMINUM, PROPAGATION, SUBSTRATES, RARE EARTH ELEMENTS, REFRACTIVE INDEX, DEFECTS(MATERIALS), IRON, MOBILITY, CRYSTALS, BUBBLES, PHOTODIODES, MAGNETIC PROPERTIES.

Subject Categories : Electrooptical and Optoelectronic Devices
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE