TY - JOUR
T1 - Selection rule for Dirac-like points in two-dimensional dielectric photonic crystals
AU - Li, Yan
AU - Wu, Ying
AU - Chen, Xi
AU - Mei, Jun
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: This work was supported by the National Natural Science Foundation of China (Grant No. 11274120), the Fundamental Research Funds for the Central Universities (Grant No. 2012ZZ0077), and the KAUST Baseline Research Fund.
PY - 2013/3/21
Y1 - 2013/3/21
N2 - We developed a selection rule for Dirac-like points in two-dimensional dielectric photonic crystals. The rule is derived from a perturbation theory and states that a non-zero, mode-coupling integral between the degenerate Bloch states guarantees a Dirac-like point, regardless of the type of the degeneracy. In fact, the selection rule can also be determined from the symmetry of the Bloch states even without computing the integral. Thus, the existence of Dirac-like points can be quickly and conclusively predicted for various photonic crystals independent of wave polarization, lattice structure, and composition. © 2013 Optical Society of America.
AB - We developed a selection rule for Dirac-like points in two-dimensional dielectric photonic crystals. The rule is derived from a perturbation theory and states that a non-zero, mode-coupling integral between the degenerate Bloch states guarantees a Dirac-like point, regardless of the type of the degeneracy. In fact, the selection rule can also be determined from the symmetry of the Bloch states even without computing the integral. Thus, the existence of Dirac-like points can be quickly and conclusively predicted for various photonic crystals independent of wave polarization, lattice structure, and composition. © 2013 Optical Society of America.
UR - http://hdl.handle.net/10754/562488
UR - https://www.osapublishing.org/oe/abstract.cfm?uri=oe-21-6-7699
UR - http://www.scopus.com/inward/record.url?scp=84875741570&partnerID=8YFLogxK
U2 - 10.1364/OE.21.007699
DO - 10.1364/OE.21.007699
M3 - Article
C2 - 23546151
SN - 1094-4087
VL - 21
SP - 7699
JO - Optics Express
JF - Optics Express
IS - 6
ER -