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Conferences > NLO > 2000 > TuB > TuB4

Enhanced Responsivity of Photo-Induced-emf Adaptive Photodetectors Using Asymmetric Interdigitated Contacts: Scaling Limits and Application to Laser Ultrasound Sensing

D. M. Pepper, G.J. Dunning, J.A. Coy, D.D. Nolte, B. Pouet, G.D. Bacher, and M.B. Klein

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Abstract

We demonstrate enhanced responsivity in GaAs photo-emf adaptive photodetectors using a novel asymmetric interdigitated electrode configuration with fine spacing. We observe enhancements even when only a fraction of an optical fringe is collected between the contacts.

© 2000 Optical Society of America

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