Strong Enhancement of THz Emission in a Metal-Graphene-Silicon Heterostructure

Dehui Zhang,Zhen Xu,Gong Cheng,Zhe Liu,Audrey Rose Gutierrez,Theodore B. Norris,Zhaohui Zhong

2020 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)（2020）

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摘要

We report a THz emitter based on a simple metal-graphene-silicon heterostructure, and demonstrate an enhancement of the amplitude by a factor of 80 over its graphene-free counterpart with no tradeoff in bandwidth or SNR. The enhancement is due to an increased carrier collection efficiency by the graphene layer.

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关键词

graphene layer,THz emission,THz emitter,simple metal-graphene-silicon heterostructure,amplitude enhancement,SNR,carrier collection efficiency,Si

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