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

Journal Article · Mon Nov 03 00:00:00 EST 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4901181· OSTI ID:22310697

Liu, Yonghao; Chadha, Arvinder; Zhao, Deyin; Shuai, Yichen; Menon, Laxmy; Yang, Hongjun; Zhou, Weidong ^[1]; Piper, Jessica R.; Fan, Shanhui ^[2]; Jia, Yichen; Xia, Fengnian ^[3]; Ma, Zhenqiang ^[4]

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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)

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.

• OSTI ID: 22310697
• Journal Information: Applied Physics Letters, Vol. 105, Issue 18; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

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