Illusion optics: The optical transformation of an object into another object (2009)
Lai, Yun, Ng, Jack, Chen, HuanYang, Han, DeZhuan, Xiao, JunJun, Zhang, Zhao- Qing, ...
We propose to use transformation optics to generate a general illusion such that an arbitrary object appears to be like some other object of our choice. This is achieved by using a remote device that...
Negative Group Velocity from Quadrupole Resonance of Plasmonic Spheres (2008)
Han, Dezhuan, Lai, Yun, Fung, Kin Hung, Zhang, Zhao-Qing, Chan, C. T.
We study the dispersions of plasmonic bands that arise from the coupling of electric quadrupole resonances in three dimensional photonic crystals (PCs) consisting of plasmonic spheres. Through...
Dirac Spectra and Edge States in Honeycomb Plasmonic Lattices (2008)
Han, Dezhuan, Lai, Yun, Zi, Jian, Zhang, Zhao-Qing, Chan, C. T.
We study theoretically the dispersion of plasmonic honeycomb lattices and find Dirac spectra for both dipole and quadrupole modes. Zigzag edge states derived from Dirac points are found in ribbons of...
Extrinsic photonic crystals (2005)
Xu, Chun, Han, Dezhuan, Wang, Xin, Liu, Xiaohan, Zi, Jian
Doped semiconductors are intrinsically homogeneous media. However, by applying an external magnetic field that has a spatially periodic variation, doped semiconductors can behave extrinsically like...
Enhanced transmission of optically thick metallic films at infrared wavelengths (2005)
Han, Dezhuan, Li, Xin, Wu, Fengqin, Zi, Jian
For an optically thick metallic film, the transmission for both s- and p-polarized waves is extremely low. If the metallic film is coated on both sides with a finite dielectric layer, light...