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Apparatus and methods for generating electromagnetic radiation

專利號
US10785858B2
公開日期
2020-09-22
申請人
Massachusetts Institute of Technology（US MA Cambridge）
發(fā)明人
Ido Kaminer; Liang Jie Wong; Ognjen Ilic; Yichen Shen; John Joannopoulos; Marin Soljacic
IPC分類
H05G2/00
技術(shù)領(lǐng)域
graphene,electron,in,radiation,spp,gp,electrons,can,plasmon,beam
地域： MA MA Cambridge

摘要

An apparatus includes at least one conductive layer, an electromagnetic (EM) wave source, and an electron source. The conductive layer has a thickness less than 5 nm. The electromagnetic (EM) wave source is in electromagnetic communication with the at least one conductive layer and transmits a first EM wave at a first wavelength in the at least one conductive layer so as to generate a surface plasmon polariton (SPP) field near a surface of the at least one conductive layer. The electron source propagates an electron beam at least partially in the SPP field so as to generate a second EM wave at a second wavelength less than the first wavelength.

說明書

FIGS. 4A-4B show schematics of graphene systems in ring structures. FIG. 4A shows a graphene system 401 having a concentric ring structure. The graphene system 401 includes a graphene ring 411 defining a cavity 421 that is concentric to the graphene ring 411. FIG. 4B shows a graphene system 402 having a non-concentric ring structure, in which a graphene ring 421 is not concentric to a cavity 422 defined by the graphene ring 421. This non-concentric ring structure can be easier to fabricate in practice. Plasmonic resonances of the concentric graphene system 401 and the non-concentric graphene system 402 can be tuned by changing the size of the rings.

權(quán)利要求

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