Published November 3, 2014 | Version v1
Journal article

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

  • 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)

Description

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.

Additional details

Identifiers

Publishing Information

Journal Title
Applied Physics Letters
Journal Volume
105
Journal Issue
18
Journal Page Range
p. 181105-181105.4
ISSN
0003-6951
CODEN
APPLAB

Optional Information

Notes
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