Antenna Enhanced Graphene THz Emitter and Detector

Tong, J. Y. and Muthee, M. and Chen, S. Y. and Yngvesson, S. K. and Yan, J.. (2015) Antenna Enhanced Graphene THz Emitter and Detector. Nano Letters, 15 (8). pp. 5295-5301.

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Recent intense electrical and optical studies of graphene have pushed the material to the forefront of optoelectronic research. Of particular interest is the few terahertz (THz) frequency regime where efficient light sources and highly sensitive detectors are very challenging to make. Here we present THz sources and detectors made with graphene field effect transistors (GFETs) enhanced by a double-patch antenna and an on-chip silicon lens. We report the first experimental observation of 1-3 THz radiation from graphene, as well as more than 3 orders of magnitude performance improvements in a half-edge-contacted GFET thermoelectric detector operating at similar to 2 THz. The quantitative analysis of the emitting power and its unusual charge density dependence indicate significant nonthermal noise contribution from the GFET. The polarization resolved detection measurements with different illumination geometries allow for detailed and quantitative analysis of various factors that contribute to the overall detector performance. Our experimental results represent a significant advance toward practically useful graphene THz devices.

Item Type: Article
Additional Information: ISI Document Delivery No.: CP1COTimes Cited: 0Cited Reference Count: 68Tong, Jiayue Muthee, Martin Chen, Shoo-Yu Yngvesson, Sigfrid K. Yan, JunUniversity of Massachusetts Amherst; National Science Foundation Directorate for Engineering ECCS-1509599; Center for Hierarchical Manufacturing CMMI-1025020; Materials Research Science and Engineering Center on Polymers DMR-0820506This work is supported by the University of Massachusetts Amherst, the National Science Foundation Directorate for Engineering (ECCS-1509599), Center for Hierarchical Manufacturing (CMMI-1025020) and the Materials Research Science and Engineering Center on Polymers (DMR-0820506).0Amer chemical socWashington1530-6992
Uncontrolled Keywords: Physics
Collections: Nanomanufacturing Research Collection > Nanomanufacturing Nanoscale Science and Engineering Centers > Center for Hierarchical Manufacturing
Depositing User: Robert Stevens
Date Deposited: 12 Nov 2015 18:38
Last Modified: 12 Nov 2015 18:38

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