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arXiv · 1404.5792

Multiple double-metal bias-free terahertz emitters

Duncan McBryde·Paul Gow·Sam A. Berry·Armen Aghajani·Mark E. Barnes·V. Apostolopoulos
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Abstract

We demonstrate multiplexed terahertz emitters that exhibits 2 THz bandwidth that do not require an external bias. The emitters operate under uniform illumination eliminating the need for a micro-lens array and are fabricated with periodic Au and Pb structures on GaAs. Terahertz emission originates from the lateral photo-Dember effect and from the different Schottky barrier heights of the chosen metal pair. We characterize the emitters and determine that most terahertz emission at 300 K is due to band-bending due to the Schottky barrier of the metal.

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Duncan McBryde, Paul Gow, Sam A. Berry, Armen Aghajani, Mark E. Barnes, V. Apostolopoulos. 2014-05-06. Multiple double-metal bias-free terahertz emitters. https://doi.org/10.1063/1.4878739

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