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Kerr Nonlinearity in 2D Graphdiyne for Passive Photonic Diodes
Author(s) -
Wu Leiming,
Dong Yuze,
Zhao Jinlai,
Ma Dingtao,
Huang Weichun,
Zhang Ye,
Wang Yunzheng,
Jiang Xiantao,
Xiang Yuanjiang,
Li Jianqing,
Feng Yaqing,
Xu Jialiang,
Zhang Han
Publication year - 2019
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201807981
Subject(s) - photonics , diode , optoelectronics , nonlinear system , materials science , kerr effect , photonic crystal , graphene , nanotechnology , physics , quantum mechanics
Graphdiyne is a new carbon allotrope comprising sp‐ and sp 2 ‐hybridized carbon atoms arranged in a 2D layered structure. In this contribution, 2D graphdiyne is demonstrated to exhibit a strong light–matter interaction with high stability to achieve a broadband Kerr nonlinear optical response, which is useful for nonreciprocal light propagation in passive photonic diodes. Furthermore, advantage of the unique Kerr nonlinearity of 2D graphdiyne is taken and a nonreciprocal light propagation device is proposed based on the novel similarity comparison method. Graphdiyne has demonstrated a large nonlinear refractive index in the order of ≈10 −5 cm 2 W −1 , comparing favorably to that of graphene. Based on the strong Kerr nonlinearity of 2D graphdiyne, a nonlinear photonic diode that breaks time‐reversal symmetry is demonstrated to realize the unidirectional excitation of Kerr nonlinearity, which can be regarded as a significant demonstration of a graphdiyne‐based prototypical application in nonlinear photonics and might suggest an important step toward versatile graphdiyne‐based advanced passive photonics devices in the future.