Journal
APPLIED PHYSICS LETTERS
Volume 103, Issue 20, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4831776
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Funding
- Chinese National Key Basic Research Special Fund [2011CB922003]
- National Basic Research Program (973 Program) of China [2012CB921900]
- Natural Science Foundation of China [11304163, 61378006, 61008002]
- Program for New Century Excellent Talents in University [NCET-13-0294]
- Natural Science Foundation of Tianjin [13JCQNJC01900]
- Specialized Research Fund for the Doctoral Program of Higher Education [20120031120032, 20100031120005]
- 111 project [B07013]
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We present a dynamically wavelength tunable plasmonically induced transparency (PIT) planar device composed of periodically patterned graphene nanostrips for the mid-infrared region. The PIT effect can be achieved by a single layer of graphene nanostrips for a fixed Fermi energy. The PIT resonant wavelength can be dynamically tuned while maintaining PIT modulation strength, transmission peaks, and spectral line width by varying the Fermi energy of graphene without reoptimizing and re-fabricating the nanostructures. A three-level plasmonic system is demonstrated to well explain the formation mechanism of the wavelength tunable PIT in the graphene nanostrips. This work may offer a further step in the development of a compact tunable PIT device. (C) 2013 AIP Publishing LLC.
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