Enhanced responsivity of photo-induced-EMF adaptive photodetectors using asymmetric interdigitated contacts: scaling limits and application to laser ultrasound sensing

Enhanced responsivity of photo-induced-EMF adaptive photodetectors using asymmetric interdigitated contacts: scaling limits and application to laser ultrasound sensing

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.

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Bibliographische Detailangaben
Hauptverfasser: Pepper, D.M., Dunning, G.J., Coy, J.A., Nolte, D.D., Pouet, B., Bacher, G.D., Klein, M.B.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Adaptive optics
Electrodes
Gallium arsenide
Optical distortion
Optical receivers
Optical sensors
Optical surface waves
Photoconductivity
Photodetectors
Ultrasonic imaging
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Beschreibung
Zusammenfassung: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.
DOI:10.1109/NLO.2000.883576