Optical Diode Action from Axially Asymmetric Nonlinearity in an All-Carbon Solid-State Device
| Autor: | Reji Philip, Benoy Anand, Sivarama Krishnan, S. Siva Sankara Sai, Ramakrishna Podila, Kiran Lingam, Apparao M. Rao |
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| Rok vydání: | 2013 |
| Předmět: |
Optics and Photonics
Silicon Materials science Fabrication Optical isolator chemistry.chemical_element Bioengineering Absorption law.invention Optics law Miniaturization General Materials Science Diode Nanotubes Carbon business.industry Graphene Mechanical Engineering Saturable absorption General Chemistry Condensed Matter Physics Carbon Nanostructures chemistry Optoelectronics Graphite Photonics business |
| Zdroj: | Nano Letters. 13:5771-5776 |
| ISSN: | 1530-6992 1530-6984 |
| DOI: | 10.1021/nl403366d |
| Popis: | Nanostructured carbons are posited to offer an alternative to silicon and lead to further miniaturization of photonic and electronic devices. Here, we report the experimental realization of the first all-carbon solid-state optical diode that is based on axially asymmetric nonlinear absorption in a thin saturable absorber (graphene) and a thin reverse saturable absorber (C60) arranged in tandem. This all-optical diode action is polarization independent and has no phase-matching constraints. The nonreciprocity factor of the device can be tuned by varying the number of graphene layers and the concentration or thickness of the C60 coating. This ultracompact graphene/C60 based optical diode is versatile with an inherently large bandwidth, chemical and thermal stability, and is poised for cost-effective large-scale integration with existing fabrication technologies. |
| Databáze: | OpenAIRE |
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