The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 25, 2018
Filed:
Mar. 01, 2016
University of Maryland, College Park, College Park, MD (US);
The United States of America, As Represented BY the Secretary of the Navy, Washington, DC (US);
Monash University, Victoria, AU;
Xinghan Cai, College Park, MD (US);
Andrei B. Sushkov, College Park, MD (US);
Mohammad M. Jadidi, Laurel, MD (US);
David Kurt Gaskill, Alexandria, VA (US);
Thomas E. Murphy, Bethesda, MD (US);
Michael Fuhrer, Victoria, AU;
Howard Dennis Drew, Hyattsville, MD (US);
University of Maryland, College Park, College Park, MD (US);
The United States of America, as represented by the Secretary of the Navy, Washington, DC (US);
Monash University, Victoria, AU;
Abstract
A plasmon-enhanced terahertz graphene-based photodetector exhibits an increased absorption efficiency attained by utilizing a tunable plasmonic resonance in sub-wavelengths graphene micro-ribbons formed on SiC substrate in contact with an array of bi-metallic electrode lines. The orientation of the graphene micro-ribbons is tailored with respect to the array of sub-wavelengths bi-metallic electrode lines. The graphene micro-ribbons extend at the angle of approximately 45 degrees with respect to the electrode lines in the bi-metal electrodes array. The plasmonic mode is efficiently excited by an incident wave polarized perpendicular to the electrode lines, and/or to the graphene micro-ribbons. The absorption of radiation by graphene is enhanced through tunable geometric parameters (such as, for example, the width of the graphene micro-ribbons) and control of a carrier density in graphene achieved through tuning the gate voltage applied to the photodetector.