Magneto-Optic Interactions.

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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 GaAsAl and a bubble film of Bi3-2xCa2xVxFe5-x012 x approximately 1.1 grown on a nonmagnetic garnet substrate such as Sm3Ga5012In, 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

Author(s):
Shahbender, Rabah ; Akselrad, Aline L. ; Druguet, John L. ; Onyshkevych, Lubomyr S.
Author Organization(s):
RCA LABS PRINCETON NJ
Descriptive Note:
Final rept. 6 Mar 72-Mar 73,
Pagination:
0091

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
PRRL-73-CR-19, AFAL-TR-73-240
Contract/Grant Number(s):
F33615-72-C-1528
Project Number(s):
AF-4150
Monitor Series:
TR-73-240
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
(*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
Field(s)/Group(s):
Electrooptical and Optoelectronic Devices, Optics
Keyword(s):
BUBBLE DOMAINS, BUBBLE MEMORIES, LIGHT EMITTING DIODES, PIN DIODES, YIG ALLOYS
Report Date:
1973 Aug 01