Precise identification of Dirac-like point through a finite photonic crystal square matrix.
Precise identification of Dirac-like point through a finite photonic crystal square matrix.
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通过有限光子晶体方阵精确识别类狄拉克点
DOI:
10.1038/srep36712
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发表时间:
2016-11-18
影响因子:
4.6
通讯作者:
Meng X
中科院分区:
文献类型:
--
作者:
Dong G;Zhou J;Yang X;Meng X
The phenomena of the minimum transmittance spectrum or the maximum reflection spectrum located around the Dirac frequency have been observed to demonstrate the 1/L scaling law near the Dirac-like point through the finite ribbon structure. However, so far there is no effective way to identify the Dirac-like point accurately. In this work we provide an effective measurement method to identify the Dirac-like point accurately through a finite photonic crystal square matrix. Based on the Dirac-like dispersion achieved by the accidental degeneracy at the centre of the Brillouin zone of dielectric photonic crystal, both the simulated and experimental results demonstrate that the transmittance spectra through a finite photonic crystal square matrix not only provide the clear evidence for the existence of Dirac-like point but also can be used to identify the precise location of Dirac-like point by the characteristics of sharp cusps embedded in the extremum spectra surrounding the conical singularity.
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影响因子:
41.2
作者:
Huang, Xueqin;Lai, Yun;Chan, C. T.
通讯作者:
Chan, C. T.
影响因子:
1.8
作者:
Wang, X.;Jiang, H. T.;Chen, H.
通讯作者:
Chen, H.
影响因子:
2.9
作者:
Raghu, S.;Haldane, F. D. M.
通讯作者:
Haldane, F. D. M.
影响因子:
3.7
作者:
PLIHAL, M;MARADUDIN, AA
通讯作者:
MARADUDIN, AA
影响因子:
3.8
作者:
Shen, Ming;Ruan, Lin-Xu;Chen, Xi
通讯作者:
Chen, Xi