1. Approaching total absorption at near infrared in a large area monolayer graphene by critical coupling.
- Author
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Yonghao Liu, Chadha, Arvinder, Deyin Zhao, Piper, Jessica R., Yichen Jia, Yichen Shuai, Menon, Laxmy, Hongjun Yang, Zhenqiang Ma, Shanhui Fan, Fengnian Xia, and Weidong Zhou
- Subjects
GRAPHENE ,ABSORPTION ,NEAR infrared spectroscopy ,MONOMOLECULAR films ,COUPLING agents (Chemistry) ,PHOTONICS ,TWO-dimensional models - Abstract
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. [ABSTRACT FROM AUTHOR]
- Published
- 2014
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