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Title: Approaching total absorption at near infrared in a large area monolayer graphene by critical coupling

We demonstrate experimentally close to total absorption in monolayer graphene based on critical coupling with guided resonances in transfer printed photonic crystal Fano resonance filters at near infrared. Measured peak absorptions of 35% and 85% were obtained from cavity coupled monolayer graphene for the structures without and with back reflectors, respectively. These measured values agree very well with the theoretical values predicted with the coupled mode theory based critical coupling design. Such strong light-matter interactions can lead to extremely compact and high performance photonic devices based on large area monolayer graphene and other two–dimensional materials.
Authors:
; ; ; ; ; ;  [1] ; ;  [2] ; ;  [3] ;  [4]
  1. Nanophotonics Lab, Department of Electrical Engineering, University of Texas at Arlington, Arlington, Texas 76019 (United States)
  2. Ginzton Laboratory, Department of Electrical Engineering, Stanford University, Stanford, California 94305 (United States)
  3. Department of Electrical Engineering, Yale University, New Haven, Connecticut 06520 (United States)
  4. Department of Electrical and Computer Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706 (United States)
Publication Date:
OSTI Identifier:
22310697
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 18; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ABSORPTION; CAVITY RESONATORS; COMPACTS; COUPLING; CRYSTALS; FILTERS; GRAPHENE; INTERACTIONS; MATERIALS; NEAR INFRARED RADIATION; OPTICAL EQUIPMENT; PHOTONS; RESONANCE; TWO-DIMENSIONAL CALCULATIONS; VISIBLE RADIATION