GaAs/AlGaAs/GaAs Heterojunction Photoconductor Array For Programmable Frequency Excision And Adaptive Filtering

Francis J. Kub; Gordon Wood Anderson; Nicolas A. Papanicolaou; John A. Modolo; Rebecca L. Grant; Douglas E. Brown

doi:10.1117/12.960554

14 August 1989 GaAs/AlGaAs/GaAs Heterojunction Photoconductor Array For Programmable Frequency Excision And Adaptive Filtering

Francis J. Kub, Gordon Wood Anderson, Nicolas A. Papanicolaou, John A. Modolo, Rebecca L. Grant, Douglas E. Brown

Author Affiliations +

Proceedings Volume 1102, Optical Technology for Microwave Applications IV; (1989) https://doi.org/10.1117/12.960554
Event: SPIE 1989 Technical Symposium on Aerospace Sensing, 1989, Orlando, FL, United States

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.

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Francis J. Kub, Gordon Wood Anderson, Nicolas A. Papanicolaou, John A. Modolo, Rebecca L. Grant, and Douglas E. Brown "GaAs/AlGaAs/GaAs Heterojunction Photoconductor Array For Programmable Frequency Excision And Adaptive Filtering", Proc. SPIE 1102, Optical Technology for Microwave Applications IV, (14 August 1989); https://doi.org/10.1117/12.960554

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