Optically modulated acoustic charge transport device

A novel heterojunction acoustic charge transport device (10) includes a transducer (24) fabricated on a GaAs/AlGaAs heterojunction material that launches surface acoustic waves (SAW) along a transport channel (35). The device is characterized by a photodiode (40) configured adjacent to the channel o...

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Bibliographische Detailangaben
Hauptverfasser:	MERRITT, SEARS W, SACKS, ROBERT N, FOYT, ARTHUR G
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BASIC ELECTRIC ELEMENTS BASIC ELECTRONIC CIRCUITRY ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS RESONATORS SEMICONDUCTOR DEVICES
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Beschreibung
Zusammenfassung:	A novel heterojunction acoustic charge transport device (10) includes a transducer (24) fabricated on a GaAs/AlGaAs heterojunction material that launches surface acoustic waves (SAW) along a transport channel (35). The device is characterized by a photodiode (40) configured adjacent to the channel on the substrate (28) to receive a modulated optical beam. An electrical signal equivalent is provided to a Schottky electrode (33) at the end of the transport channel modulating the charge propagated by the surface acoustic wave. The modulated signal is output at a distal end of the transport channel.