Terahertz imaging of optically modulated graphene layers

R. Ivaskeviciute-Povilauskiene,D. Seliuta,D. Jokubauskis,L. Minkevicius,A. Urbanowicz,I Matulaitiene, L. Mikoliunaite,N. Alexeeva,G. Valusis

2022 47TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER AND TERAHERTZ WAVES (IRMMW-THZ 2022)（2022）

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摘要

Terahertz (THz) imaging in combination with optical graphene modulation can serve as a versatilite technique for contactless characterization and discrimination of graphene layers. Maximum modulation depth of 45 % has been reached for double-layer graphene. This technique increased the contrast up to 16 % for single-layer graphene and 23 % for double-layer graphene under laser illumination.

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关键词

terahertz imaging,optically modulated graphene layers,optical graphene modulation,contactless characterization,modulation depth,double-layer graphene,single-layer graphene,laser illumination,C

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