Frequency and strength of the plasmonic resonance can be tuned in THz range continuously by doping and discretely by changing the width of a single layer graphene strip. It creates strong detector response in the gap between Drude and interband transitions present in infinite graphene sheet. We have working detectors for a FIR laser with power of mW level and we are working toward microWatt sensitivity necessary for a Fourier spectrometer. We will present our devices, optical methods, and our progress in THz detectors.
*This work was sponsored by the U.S. Office of Naval Research (award numbers N000140911064, N000141310712, N000141310865).
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Authors
Andrei Sushkov
CNAM, Univ of Maryland, College Park
University of Maryland
CNAM and MRSEC at University of Maryland
Xinghan Cai
CNAM and MRSEC at University of Maryland
Don Schmadel
CNAM and MRSEC at University of Maryland
Greg Jenkins
CNAM and MRSEC at University of Maryland
Dennis Drew
CNAM and MRSEC at University of Maryland
L. Nyakiti
U.S. Naval Research Laboratory, Washington, DC 20375
V.D. Wheeler
U.S. Naval Research Laboratory, Washington, DC 20375
R.L. Myers-Ward
U.S. Naval Research Laboratory, Washington, DC 20375
N.Y. Garces
U.S. Naval Research Laboratory, Washington, DC 20375
C.R. Eddy, Jr.
U.S. Naval Research Laboratory, Washington, DC 20375
D.K. Gaskill
U.S. Naval Research Laboratory, Washington, DC 20375
