Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/5882
Title: Optical diode action from axially asymmetric nonlinearity in an all-carbon solid-state device.
Authors: Anand, Benoy
Podila, Ramakrishna
Lingam, Kiran
Krishnan, S.R.
Sai, Siva Sankara S.
Philip, Reji
Rao, Apparao M.
Keywords: Optical diode
graphene
nonlinear absorption
nonreciprocity
Issue Date: 13-Nov-2013
Publisher: American Chemical Society
Citation: Nano Letters, 2013, Vol.13, p5771-5776
Abstract: 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.
Description: Restricted Access.
URI: http://hdl.handle.net/2289/5882
ISSN: 1530-6984
Alternative Location: http://dx.doi.org/10.1021/nl403366d
Copyright: 2013 American Chemical Society
Appears in Collections:Research Papers (LAMP)

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