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Proceedings Paper

GaAs/AlGaAs/GaAs Heterojunction Photoconductor Array For Programmable Frequency Excision And Adaptive Filtering
Author(s): Francis J. Kub; Gordon Wood Anderson; Nicolas A. Papanicolaou; John A. Modolo; Rebecca L. Grant; Douglas E. Brown
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Paper Abstract

The first demonstration of acousto-optical excision using a GaAs photodetector array is reported. A maximum isolation of 40 dB was obtained using a six element GaAs interdigitated finger heterojunction photoconductor array. The center frequency was 45 MHz, and the swept bandwidth was 3 MHz. The response of discrete GaAs heterojunction photoconductors was linear with bias voltage potentially making them useful for performing multiplication functions in optical analog filters. Concepts of using these photoconductors for optical adaptive filters are discussed.

Paper Details

Date Published: 14 August 1989
PDF: 7 pages
Proc. SPIE 1102, Optical Technology for Microwave Applications IV, (14 August 1989); doi: 10.1117/12.960554
Show Author Affiliations
Francis J. Kub, Naval Research Laboratory (United States)
Gordon Wood Anderson, Naval Research Laboratory (United States)
Nicolas A. Papanicolaou, Naval Research Laboratory (United States)
John A. Modolo, Naval Research Laboratory (United States)
Rebecca L. Grant, Department of Defense (United States)
Douglas E. Brown, Department of Defense (United States)


Published in SPIE Proceedings Vol. 1102:
Optical Technology for Microwave Applications IV
Shi-Kay Yao, Editor(s)

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