TH703 2001010049磁透镜七级球差系数的计算=Calculations ofseventh - order spherical - aberrationcoefficients of the magnetic lens[刊,中]/高俊,木崇俊,桑冠华(云南大学物理系.云南,昆明(650091))∥电子显微学报.-2000,19(4).-61...TH703 2001010049磁透镜七级球差系数的计算=Calculations ofseventh - order spherical - aberrationcoefficients of the magnetic lens[刊,中]/高俊,木崇俊,桑冠华(云南大学物理系.云南,昆明(650091))∥电子显微学报.-2000,19(4).-611-612利用光程函数法推导出了旋转对称电子光学系统的七级几何像差公式,给出普通意义下的各像差系统。进一步计算了各种激励下磁透镜的七级球差系数。表1参2(李瑞琴)TH703 2001010050激光冷却在原子束六极磁透镜技术中的应用=Application of laser cooling in atomic beamimaging by a hexapole magnetic lens[刊,中]/李传文,蔡惟泉。展开更多
A low-loss fiber optic rotary joint (FORJ) has been designed by using two kinds of C-lens collimators. Its insertion loss and insertion loss variation due to rotation with single-mode fiber collimator is less than 1.7...A low-loss fiber optic rotary joint (FORJ) has been designed by using two kinds of C-lens collimators. Its insertion loss and insertion loss variation due to rotation with single-mode fiber collimator is less than 1.76 dB and 0.43 dB respectively.The maximum insertion loss and coupling variation due to rotation with multi-mode fiber collimator is 1.71 dB and 0.29 dB, respectively. This kind of FORJ features low insertion loss, small coupling variation due to rotation and low cost.展开更多
In this letter, we have studied the tunneling effects and fluctuations of spinor Bose-Einstein condensates in optical lattice. It is found that there exist tunneling effects and fluctuations between lattices l and l ...In this letter, we have studied the tunneling effects and fluctuations of spinor Bose-Einstein condensates in optical lattice. It is found that there exist tunneling effects and fluctuations between lattices l and l ＋ 1, l and l - 1, respectively. In particular, when the optical lattice is infinitely long and the spin excitations are in the long-wavelength limit, tunneling effects disappear between lattices I and l＋ 1, and I and l - 1. In this case the fluctuations are a constant, and the magnetic soliton appears.展开更多
Based on the conclusion that the generalized Bargmann representation of a two-mode Fock state is a two-variable Hermite polynomial function /Hong-Yi Fan and Jun-hua Chen,Phys.Lett.A303(2002)311] we derive the generali...Based on the conclusion that the generalized Bargmann representation of a two-mode Fock state is a two-variable Hermite polynomial function /Hong-Yi Fan and Jun-hua Chen,Phys.Lett.A303(2002)311] we derive the generalized Bargmann representation of the spin coherent state and some new relations in the generalized function space.展开更多
In order to gain circularly polarized light of left-handed and right-handed rotation by using a fixed device, a left-handed and right-handed rotation double function circular polarizer is designed with two λ/4 retard...In order to gain circularly polarized light of left-handed and right-handed rotation by using a fixed device, a left-handed and right-handed rotation double function circular polarizer is designed with two λ/4 retarders and one polarizer, and its operating principle is analysed by matrix optical means. The result indicates that when the monochromatic light enters this circular polarizer in the positive direction and the negative direction,the emergent light should be circularly polarized light,of left-handed and right-handed rotation respectively. The testing system has been established to verify the above results.展开更多
The present paper reviews new findings in redoxproperties of the active constituent of Chinese herbalmedicine(CHM),a kind of CHM or a compoundprescription as an antioxidant.Firstly,we have studiedtheir antioxidant and...The present paper reviews new findings in redoxproperties of the active constituent of Chinese herbalmedicine(CHM),a kind of CHM or a compoundprescription as an antioxidant.Firstly,we have studiedtheir antioxidant and prooxidant actions with electronspin resonance(ESR).The results show that the activecomponents from over 10 kinds of CHM are able toscavenge the oxygen free radicals but propyl gallate展开更多
文摘TH703 2001010049磁透镜七级球差系数的计算=Calculations ofseventh - order spherical - aberrationcoefficients of the magnetic lens[刊,中]/高俊,木崇俊,桑冠华(云南大学物理系.云南,昆明(650091))∥电子显微学报.-2000,19(4).-611-612利用光程函数法推导出了旋转对称电子光学系统的七级几何像差公式,给出普通意义下的各像差系统。进一步计算了各种激励下磁透镜的七级球差系数。表1参2(李瑞琴)TH703 2001010050激光冷却在原子束六极磁透镜技术中的应用=Application of laser cooling in atomic beamimaging by a hexapole magnetic lens[刊,中]/李传文,蔡惟泉。
基金This work was supported by the National Natural Science Foun-dation of China under contract No.60377031 ,National BasicResearch Programof China under contract No.2003CB314907 .
文摘A low-loss fiber optic rotary joint (FORJ) has been designed by using two kinds of C-lens collimators. Its insertion loss and insertion loss variation due to rotation with single-mode fiber collimator is less than 1.76 dB and 0.43 dB respectively.The maximum insertion loss and coupling variation due to rotation with multi-mode fiber collimator is 1.71 dB and 0.29 dB, respectively. This kind of FORJ features low insertion loss, small coupling variation due to rotation and low cost.
文摘In this letter, we have studied the tunneling effects and fluctuations of spinor Bose-Einstein condensates in optical lattice. It is found that there exist tunneling effects and fluctuations between lattices l and l ＋ 1, l and l - 1, respectively. In particular, when the optical lattice is infinitely long and the spin excitations are in the long-wavelength limit, tunneling effects disappear between lattices I and l＋ 1, and I and l - 1. In this case the fluctuations are a constant, and the magnetic soliton appears.
文摘Based on the conclusion that the generalized Bargmann representation of a two-mode Fock state is a two-variable Hermite polynomial function /Hong-Yi Fan and Jun-hua Chen,Phys.Lett.A303(2002)311] we derive the generalized Bargmann representation of the spin coherent state and some new relations in the generalized function space.
文摘In order to gain circularly polarized light of left-handed and right-handed rotation by using a fixed device, a left-handed and right-handed rotation double function circular polarizer is designed with two λ/4 retarders and one polarizer, and its operating principle is analysed by matrix optical means. The result indicates that when the monochromatic light enters this circular polarizer in the positive direction and the negative direction,the emergent light should be circularly polarized light,of left-handed and right-handed rotation respectively. The testing system has been established to verify the above results.
文摘The present paper reviews new findings in redoxproperties of the active constituent of Chinese herbalmedicine(CHM),a kind of CHM or a compoundprescription as an antioxidant.Firstly,we have studiedtheir antioxidant and prooxidant actions with electronspin resonance(ESR).The results show that the activecomponents from over 10 kinds of CHM are able toscavenge the oxygen free radicals but propyl gallate
