Graphene-based voltage-tunable coherent terahertz emitter

Abstract

A portion of the electromagnetic wave spectrum between $\sim 0.1$ and $\sim 10$ terahertz (THz) suffers from the lack of powerful, effective, easy-to-use and inexpensive emitters, detectors and mixers. We propose a multilayer graphene -- boron-nitride heterostructure which is able to emit radiation in the frequency range $\sim 0.1-30$ THz with the power density up to $\sim 0.5$ W/cm${}^2$ at room temperature. The proposed device is extremely thin, light, flexible, almost invisible and may completely cover the needs of science and technology in the sources of terahertz radiation.

4 pages, 4 figures, slightly modified version of the previous submission

References in corpus (2)

• Electric Field Effect in Atomically Thin Carbon Films
• Universal Dynamic Conductivity and Quantized Visible Opacity of Suspended Graphene

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• Band Gaps in Jagged and Straight Graphene Nanoribbons Tunable by an External Electric Field
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• Surface Plasmon Instability Leading to Emission of Radiation
• Negative dynamic conductivity of a current driven array of graphene nanoribbons
• Radiative damping and synchronization in a graphene-based terahertz emitter
• CUBIT: Capacitive qUantum BIT
• Ultra-High Normalized Bandwidth TE and TM Polarization Insensitive Terahertz Absorber with Graphene Disks Configuration