It is shown that the momentum density of free electromagnetic field splits into two parts. One has no contribution to the net momentum due to the transversality condition. The other yields all the...
Chen, Xi, Wang, Li-Gang, Li, Chun-Fang
Motivated by the realization of the Dirac point (DP) with a double-cone structure for optical field in the negative-zero-positive index metamaterial (NZPIM), the reflection, transmission, and...
Chen, Xi, Li, Chun-Fang, Wei, Rong-Rong, Zhang, Yan
We have investigated that the Goos-H\"anchen (GH) shifts in frustrated total internal reflection (FTIR) studied with wave packet propagation. In the first-order approximation of the transmission...
Voltage-tunable lateral shifts of ballistic electrons in semiconductor quantum slabs (2009)
Chen, Xi, Ban, Yue, Li, Chun-Fang
It is investigated that the lateral shifts of the ballistic electrons transmitted through a semiconductor quantum slabs can be negative as well as positive, which are analogous to the anomalous...
Orbital angular momentum is dependent on polarization (2009)
After presenting a new approach to separate the total angular momentum of an electromagnetic beam into the spin and orbital parts, which manifests that the spin angular momentum originates from that...
Tunable Goos-H\"{a}nchen shift and polarization beam splitter in electro-optic crystals (2008)
Chen, Xi, Shen, Ming, Zhang, Zhen-Fu, Li, Chun-Fang
We have investigated the tunable lateral shift and polarization beam splitting of the transmitted light beam through electro-optic crystals, based on the Pockels effect. The positive and negative...
From transversality condition to representation formalism of vector electromagnetic beams (2008)
A representation theory of finite electromagnetic beams in free space is formulated by introducing a mapping matrix that maps a 2-component Jones vector to a 3-component electric-field vector. It is...
Ethyl 2-acetylhydrazono-2-phenylacetate (2008)
Liang-Zhong Xu, Xu Yi, Guang-Wei An, Gong-Sheng Zhang, Chun-Fang Li
The title compound, C12H14N2O3, was synthesized as an intermediate for the synthesis of metamitron. The benzene ring forms dihedral angles of 86.3 (2) and 10.0 (3)° with the ethyl...
A unified description of the free-space cylindrical vector beams is presented, which is an integral transformation solution to the vector Helmholtz equation and the transversality condition. The...
The mechanism of superluminal traversal time through a potential well or potential barrier is investigated from the viewpoint of interference between multiple finite wave packets, due to the multiple...
Unified theory for Goos-H\"{a}nchen and Imbert-Fedorov effects (2006)
A unified theory is advanced to describe both the lateral Goos-H\"{a}nchen (GH) effect and the transverse Imbert-Fedorov (IF) effect, through representing the vector angular spectrum of a...
Lateral shift of the transmitted light beam through a left-handed slab (2004)
It is reported that when a light beam travels through a slab of left-handed medium in the air, the lateral shift of the transmitted beam can be negative as well as positive. The necessary condition...
Negative group delay for Dirac particles traveling through a potential well (2004)
The properties of group delay for Dirac particles traveling through a potential well are investigated. A necessary condition is put forward for the group delay to be negative. It is shown that this...
Resonance-enhanced group delay times in an asymmetric single quantum barrier (2004)
It is shown that the transmission and reflection group delay times in an asymmetric single quantum barrier are greatly enhanced by the transmission resonance when the energy of incident particles is...