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1.
The coefficients of reflection and refraction on interface of the crystals in the Savart polariscope
According to the boundary conditions of the electromagnetic field, the coefficients of reflection and refraction on the interface of crystal in the Savart polariscope are obtained for ordinary ray (o-ray) and extraordinary ray (e-ray).The coefficients of reflection and refraction are different from an isotropic medium and have more complicated forms than isotropic medium. 相似文献
2.
Relationship between incident angle and dispersion in static large field of view polarization interference imaging spectrometer 下载免费PDF全文
The static large field of the view polarization interference
imaging spectrometer is based on the modified Savart polariscope.
There appears a dispersion between the ordinary ray and extraordinary
ray when light passes through the modified Savart polariscope. The
dispersion greatly influences the intensities and the results of the
interferogram and target image in the static large field of the view
polarization interference imaging spectrometer. At the same time,
the incident angle determines the dispersion. When the light goes
through the modified Savart polariscope, the dispersion occurs in
the left plate, the half-wave plate and the right plate of the
modified Savart polariscope. Using the extension of Snell's law, the
dispersion in the crystal is theoretically calculated and
numerically simulated separately. The relationship curve between
incident angle and the dispersion is obtained by simulation. 相似文献
3.
论述了基于视场补偿型Savart偏光镜的稳态大视场偏振干涉成像光谱仪的分光机理.依据电磁场边值条件,分析了光在视场补偿型Savart偏光镜中各晶体分界面上的透射情况,得出了透射率的理论计算公式.采用计算机模拟,分析了在半波片为不同材料时,透射率随入射波长、视场角及半波片厚度的变化关系.研究表明,视场补偿型Savart偏光镜具有大视场、高通量、高探测灵敏度的显著特点.此研究可为新型干涉成像光谱技术的研究和新型偏振干涉成像光谱仪的设计、研制提供重要的理论指导.
关键词:
偏振干涉成像光谱仪
视场补偿型Savart偏光镜
透射率
电磁场边值条件 相似文献
4.
5.
Study on autonomous navigation based on pulsar timing model 总被引:1,自引:0,他引:1
The basic principle of pulsar timing model was introduced, and the general relativistic corrections were analyzed when pulse
time of arrival (TOA) was transferred to coordinate TOA at the Solar System Barycentre. Based on the shifting, an iterative
method of autonomous position determination for spacecraft was developed. Accordingly, the linear form of the position offset
equation was evolved. Using the initial estimated value of spacecraft’s position as the input of pulsar timing equation, through
calculation of the offset between measured or transferred and predicted TOA, the position offset can be solved by Least Squares.
At last, the main error sources including modeling error and parameters error were discussed.
Supported by the National Defence Laboratory Foundation of China (Grant No. 9140C3601010901) and Science Foundation of Shaanxi
Province (Grant No. 2007F12) and the Technology Specialism Foundation of Shaanxi Education Department of Shaanxi Province
(Grant No. 07JK332), and the Innovative Research Plan of Xi’an University of Technology (Grant No. 105-210714) 相似文献
6.
We establish reflection positivity of covariance operators, using properties of Dirichlet or Neumann boundary data.Supported in part by National Science Foundation Grant No. PHY 78-08066.Supported in part by National Science Foundation Grant No. PHY 77-18762. 相似文献
7.
Savart偏光镜是自行研制的新型稳态偏振干涉成像光谱仪中的核心部件,阐述了该Savart偏光镜的分光机理.基于电磁场边值条件,分析了入射面与Savart偏光镜左板主截面重合及垂直时,光透过Savart偏光镜各界面的反射和折射,得出了各界面透射系数的表达式以及Savart偏光镜透射率的理论计算公式.采用计算机模拟,给出了Savart偏光镜透射率随视场角和波长的变化曲线,并与研制的Savart偏光镜实验测试结果进行了分析比较,两者变化规律相符. 表明该Savart偏光镜具有大视场、高通量的显著特点,适宜作为静态干涉仪和稳态偏振干涉成像光谱仪的高效横向剪切分束器. 这为新型偏振干涉成像光谱技术的研究以及仪器研制提供了重要的理论依据. 相似文献
8.
The way to compare the efficiencies of different detect strategies (DSs) in the “ping-pong” protocol is studied. The trade-off
between information gain and disturbance is calculated and compared for different DSs. The comparison result primely tallies
with our intuitional analysis. It is shown that the analysis of this trade-off is a feasible way to compare the performances
of different DSs in theory.
Supported by the National High Technology Research and Development Program of China (Grant No. 2006AA01Z419), the National
Natural Science Foundation of China (Grant Nos. 90604023 and 6087319), the National Laboratory for Modern Communications Science
Foundation of China (Grant No. 9140C1101010601), the Natural Science Foundation of Beijing (Grant No. 4072020), and the ISN
Open Foundation. 相似文献
9.
From the perspective of information theory and cryptography, the security of two quantum dialogue protocols and a bidirectional
quantum secure direct communication (QSDC) protocol was analyzed, and it was pointed out that the transmitted information
would be partly leaked out in them. That is, any eavesdropper can elicit some information about the secrets from the public
annunciations of the legal users. This phenomenon should have been strictly forbidden in a quantum secure communication. In
fact, this problem exists in quite a few recent proposals and, therefore, it deserves more research attention in the following
related study.
Supported by the National High Technology Research and Development Program of China (Grant No. 2006AA01Z419), the National
Natural Science Foundation of China (Grant Nos. 90604023 and 60373059), the National Research Foundation for the Doctoral
Program of Higher Education of China (Grant No. 20040013007), the National Laboratory for Modern Communications Science Foundation
of China (Grant No. 9140C1101010601), the Natural Science Foundation of Beijing (Grant No. 4072020) and the ISN Open Foundation 相似文献
10.
The transmission characteristics of a metallic film with subwavelength ellipsoid nanohole arrays are investigated by using
the three-dimensional finite-difference time-domain (3D-FDTD) method. The extraordinary transmission is attributed to the
collaboration of localized waveguide resonance and surface plasmon resonance. The influences of the lattice constant and the
hole shape on the transmission are studied. By analyzing the picture of electric field and electromagnetic energy distribution,
we show the mechanisms of the two different resonances: Localized waveguide resonance mode can be confined inside the ellipsoid
holes region, while electric field and electromagnetic energy are localized separately at the two ends of ellipsoid holes
for the surface plasma resonance mode.
Supported by the National Natural Science Foundation of China (Grant No. 60708014), the Distinguished Youth Foundation of
Hunan Province (Grant No. 03JJY1008), the Science Foundation for Post-doctorate of China (Grant No. 2004035083), and the Natural
Science Foundation of Hunan Province (Grant No. 06JJ20034) 相似文献
11.
An efficient quantum secure direct communication protocol is presented over the amplitude damping channel. The protocol encodes
logical bits in two-qubit noiseless states, and so it can function over a quantum channel subjected to collective amplitude
damping. The feature of this protocol is that the sender encodes the secret directly on the quantum states, the receiver decodes
the secret by performing determinate measurements, and there is no basis mismatch. The transmission’s safety is ensured by
the nonorthogonality of the noiseless states traveling forward and backward on the quantum channel. Moreover, we construct
the efficient quantum circuits to implement channel encoding and information encoding by means of primitive operations in
quantum computation.
Supported by the National Natural Science Foundation of China (Grant Nos. 60873191 and 60821001), the Specialized Research
Fund for the Doctoral Program of Higher Education (Grant No. 200800131016), the Natural Science Foundation of Beijing (Grant
No. 4072020), the National Laboratory for Modern Communications Science Foundation of China (Grant No. 9140C1101010601), and
the ISN Open Foundation 相似文献
12.
The mechanism of beam splitting and principle of wide-field-of-view compensation of modified Savart polariscope in the wide-field-of-view polarization interference imaging spectrometer (WPIIS) are analyzed and discussed. Formulas for the lateral displacement and optical path difference (OPD) produced by the modified Savart polariscope are derived by ray-tracing method. The theoretical and practical guidance is thereby provided for the study, design, modulation, experiment and engineering of the polarization interference imaging spectrometers and other birefringent Fourier-transform spectrometers based on Savart polariscopes. 相似文献
13.
Based on the potential flow theory, the vortex ring is introduced to simulate the toroidal bubble, and the boundary element
method is applied to simulate the evolution of the bubble. Elastic-plasticity of structure being taken into account, the interaction
between the bubble and the elastic-plastic structure is computed by combining the boundary element method (BEM) and the finite
element method (FEM), and a corresponding 3D computing program is developed. This program is used to simulate the three-dimensional
bubble dynamics in free field, near wall and near the elastic-plastic structure, and the numerical results are compared with
the existing experimental results. The error is within 10%. The effects of different boundaries upon the bubble dynamics are
presented by studying the bubble dynamics near different boundaries.
Supported by the National Natural Science Foundation of China (Grant No. 50779007), the National Science Foundation for Young
Scientists of China (Grant No. 50809018), the Specialized Research Fund for the Doctoral Program of Higher Education of China
(Grant No. 20070217074), the Defense Advanced Research Program of Science and Technology of Ship Industry (Grant No. 07J1.1.6),
and Harbin Engineering University Foundation (Grant No. HEUFT07069) 相似文献
14.
ShaoPeng Yang ShanShan Fan ChunLei Li GuoZhi Fan Tao Meng XiaoWei Li GuangSheng Fu Xicheng Ai XiaoHui Zhao JianPing Ye LingXuan Wang 《中国科学G辑(英文版)》2008,51(3):243-250
The fluorescence spectra of three different dyes adsorbed on the tabular and cubic AgBr microcrystals are obtained by the
picosecond time-resolved streak camera technique. The dependence of the ultrafast electron transferring from dye-aggregates
to the conduction band of AgBr and the efficiency of spectral sensitization on different kinds of dyes with different concentrations
is analyzed. Further more, the microcosmic mechanism of the sensitization process is discussed. It is found that the fluorescence
decay curves are fitted very well by the double exponential function, consisting of a slow component and a fast one with large
amplitude. We consider this fast one mainly attributable to the electron transfer from dye J-aggregates to the conduction
band of AgBr.
Supported by the National Natural Science Foundation of China (Grant No. 60478033), the Doctoral Foundation of Hebei Province
of China (Grant No. B2003119), and the Science and Technology Project of Hebei Province of China (Grant No. 05215102) 相似文献
15.
Through phase transformation kinetic analysis and experimental observation, the δ/γ transformation occurring in the non-equilibrium peritectic Fe-4.33at.%Ni alloys was systematically investigated. According to JMA solid-state transformation kinetic theory, the Time-Temperature-Transformation (TTT) curves of the δ/γ transformation in peritectic Fe-Ni alloy were calculated. On this basis, the physical correlation between the δ/γ transformation and the initial undercooling of melt (△T) was elucidated. The results indicate that the change of △T can alter not only the overall δ/γ transformation pathways but also the transformation fraction with respect to each transformation mechanism. 相似文献
16.
The field of medical photonics is rapidly expanding, and a wide variety of optical technologies and instruments have recently
been developed for diagnostic, therapeutic and basic science applications in medicine. This review presents the recent advances
and application of medical photonics, and the obtained results from our laboratory are highlighted. Finally, the challenges
and future prospects for the transition from technological exploration to clinical studies are discussed.
Supported by the National Natural Science Foundation of China (Grant No. 60678054), the PhD Program Foundation of Ministry
of Education (Grant No. 200803940001), the Key Grants from Ministry of Education (Grant No. 209063), and the Fujian Provincial
Natural Science Foundation (Grant No. 2008J0001) 相似文献
17.
The probability of successful controlled teleportation of an unknown qubit using a general three-particle state is investigated.
The analytic expressions of maximal probabilities via several kinds of tripartite states are given, including a tripartite
Greenberger-Horne-Zeilinger state and a tripartite W-state.
Supported by the National Natural Science Foundation of China (Grant No. 10671054), the Key Project of Science and Technology
Research of Ministry of Education of China (Grant No. 207011), and the Natural Science Foundation of Hebei Province, China
(Grant No. 07M006) 相似文献
18.
MingZhen Ma HaiTao Zong HaiYan Wang YanPeng Qi SunXing Liang AiJun Song WeiGuo Zhang Qiang Wang XinYu Zhang Qin Jing Gong Li RiPing Liu 《中国科学G辑(英文版)》2008,51(4):438-444
The fluidity and filling ability of glass-forming Zr-based alloy melt in copper mould were investigated both theoretically
and experimentally. The major factors which affected the flowing behavior of the metallic melt in the mold were determined,
which provides the foundation for overcoming the contradiction between the filling and formation of amorphous alloy during
the rapid cooling process of the metallic melts. The casting factors to prepare a metallic ring were discussed and selected.
As a result, a Zr-based bulk metallic glass ring was prepared successfully.
Supported by the National Natural Science Foundation of China (Grant No. 50731005), SKPBRC (Grant No. 2006CB605201/2007CB616915),
PCSIRT (Grant No. IRT0650), the Natural Science Foundation of Hebei Province of China (Grant No. E2004000209), the Scientific
Research Foundation of Education Department of Hebei Province of China (Grant No. 2004464), and the Experts and Scholars Fund
of Personnel Department of Hebei Province, China (Grant No. 2003) 相似文献
19.
First-principles study of interphase Ni3Sn in Sn--Ni alloy for anode of lithium ion battery 下载免费PDF全文
This paper investigates the mechanism of Li insertion into interphase Ni3Sn in Ni-Sn alloy for the anode of lithium ion battery by means of the first-principles plane-wave pseudopotential. Compared with other phases, it is found that the Ni3Sn has larger relative expansion ratio and lower electrochemical potential, with its specific plateaus voltage around 0.3 eV when lithium atoms are filled in all octahedral interstitial sites, and the relative expansion ratio increasing dramatically when the lithiated phase transits from octahedral interstitial sites to tetrahedral interstitial sites. So this phase is a devastating phase for whole alloy electrode materials. 相似文献
20.
The refraction of rays in the Savart polariscope is different from the isotropic medium. We have analysed and discussed the refraction of rays in the Savart polariscope on the basis of the Snell law. The refraction formulae of the extraordinary rays and ordinary rays were derived. Results obtained may provide theoretical and practical guide lines for studying, developing and engineering of polarization interference imaging spectrometer. 相似文献