Nanoscale graphene/Ge wigglers as building blocks for THz sources

Anwar, F.; Carlos, C. R.; Saraswat, V.; Mangu, V. S.; Arnold, M. S.; Cavallo, F.

doi:10.1063/1.4986513

Title: Nanoscale graphene/Ge wigglers as building blocks for THz sources

Journal Article · Mon Nov 13 00:00:00 EST 2017 · AIP Advances

DOI:https://doi.org/10.1063/1.4986513· OSTI ID:1499106

Anwar, F. ^[1]; Carlos, C. R. ^[2];

^[3]; Mangu, V. S. ^[1]; Arnold, M. S. ^[3]; Cavallo, F. ^[1]

Univ. of New Mexico, Albuquerque, NM (United States). Dept. of Electrical and Computer Engineering. Center for High Technology Materials
Univ. of New Mexico, Albuquerque, NM (United States). Dept. of Electrical and Computer Engineering. Center for High Technology Materials; Univ. of Wisconsin, Madison, WI (United States). Dept. of Materials Science and Engineering
Univ. of Wisconsin, Madison, WI (United States). Dept. of Materials Science and Engineering

We demonstrate that wrinkled graphene on Ge with nanoscale period and amplitude holds the potential to generate cyclotron-like radiation in the THz range of the electromagnetic spectrum. We show nanoscale graphene wigglers fabricated by release and transfer of atomically thin sheets to one-dimensional Ge gratings. We present a simple time of flight and interference model to calculate the radiated frequency and output power for the fabricated devices. We establish, theoretically, that an output power of ~ 0.1-7 mW can be obtained from graphene/Ge wigglers with period not exceeding 85 nm, and amplitude-to-period ratio in the range of 1.4 to 10.

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Research Organization:: Univ. of Wisconsin, Madison, WI (United States); Univ. of New Mexico, Albuquerque, NM (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES); Air Force Office for Scientific Research (AFOSR) (United States)

Grant/Contract Number:: SC0016007; FA9550-12-1-0049

OSTI ID:: 1499106

Alternate ID(s):: OSTI ID: 1421246

Journal Information:: AIP Advances, Vol. 7, Issue 11; ISSN 2158-3226

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 6 works

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Title: Nanoscale graphene/Ge wigglers as building blocks for THz sources

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