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透镜聚焦     
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  lens focusing
     The focusing curves ( r z ), which higher order mode laser beams(i.e.: the mode TEM 11 、TEM 12 (or TEM 21 )、TEM 22 of Hermitian Gauss beams and the mode TEM 10 、TEM 11 of Laguerre Gauss beams) propagate through a focusing optical system (for example: a pair of lens focusing system), are obtainable on the basis of Huygens Fresnel principle and Sampling theory and by programming , calculating, and making use of Graftool.
     以惠更斯 -菲涅尔原理和取样理论为基础 ,利用计算机编程计算和绘图软件 Graftool得到高阶模激光束 (如厄米 -高斯光束 TEM1 1 、TEM1 2 (或 TEM2 1 )、TEM2 2 和拉盖尔 -高斯光束 TEM1 0 、TEM1 1 )经过会聚光学系统 (以双透镜聚焦系统为例 )传播后的聚焦曲线 (r- z)。
短句来源
     Laguerre Gauss Beam Propagation through a Pair of Lens Focusing System
     拉盖尔-高斯光束通过双透镜聚焦系统的传播
短句来源
     By use of Huygens Fresnel principle and sampling theory,the formulas of circular sum for Laguerre Gauss beams propagate through a pair of lens focusing system which can be described by an ABCD ray transfer matrix are derived. The diffraction patterns of Laguerre Gauss beams propagating through above mentioned optical system are calculated by programming.
     运用惠更斯-菲涅尔原理和取样理论,推导了拉盖尔-高斯光束通过可由ABCD转换矩阵描述的双透镜聚焦系统传播的循环求和公式.利用计算机编程计算了拉盖尔-高斯光束通过上述光学系统传播的衍射图案
短句来源
     The expression for axial light intensity distribution of the Bessel-modulated Gaussian beam with Quadratic radial dependence (QBG beam) passing through ABCD focusing system is given in the paper. A study on axial light intensity distribution and focal shift of Bessel-modulated Gaussian beam with quadratic radial dependence passing through the thin lens focusing system is carried out. The cubic equation and analytic solutions fulfilled by the relative focal shift are obtained.
     给出变量为径向平方的贝塞尔函数调制的高斯光束 ( QBG光束 )通过 ABCD聚焦光学系统的轴上光强分布公式 ,对 QBG光束通过薄透镜聚焦系统的轴上光强分布及焦移进行了研究 ,得到相对焦移满足的三次方程和解析解 ,给出详细的数值计算结果并进行了分析讨论。
短句来源
     The lens focusing is adopted to increase signal intensity.
     采用透镜聚焦接收,增大信号强度;
短句来源
  lens focused
     DESIGN OF TWO─LENS FOCUSED ION BEAM SYSTEM WITH VARIABLE BEAM CURRENT
     可变束流二级透镜聚焦离子束系统的设计
短句来源
     A Nd 3+ ∶YAG laser is pumped by a fiber coupled and GRIN lens focused diode laser and the focal length of the equivalent thermal lens is measured by using unstable cavity method.
     用激光二极管经光纤耦合和 GRIN透镜聚焦后抽运 Nd3 + :YAG激光器 ,用非稳腔方法测量了 Nd3 + :YAG晶体的等效热透镜焦距 ;
短句来源
     SINGLE LENS FOCUSED ION BEAM SYSTEM
     单级透镜聚焦离子束系统的研究
短句来源
  “透镜聚焦”译为未确定词的双语例句
     The mode-match of pumping laser and oscillation laser, and the relation between the transfer efficiency and the mode-match is analyzed theoretically and experimentally,as the pumping laser is focused by different lens and the different cavity length is adopted by Cr4+:Mg2SiO4 laser .
     从理论和实验上分析了抽运光采用不同焦距的透镜聚焦和Cr4+:Mg2SiO4激光器采用不同腔长时,抽运光和振荡激光的模式匹配,以及模式匹配与激光器光-光转换效率之间的关系。
短句来源
     Experimental Results of Focusing Performance for the Compound High-Energy X-Ray Refractive Lenses
     高能X射线组合透镜聚焦性能的实验结果
短句来源
     Investigation on Laser Driling with Focusing of Ultrasonic Vibration Lens
     超声振动透镜聚焦法激光打孔
短句来源
     Experimental results indicate the BPP of the fast axis can be transformed into 12 mm·mrad and 9.5 mm·mrad for the slow axis after beam shaping. The beams can be coupled into the fiber of 200 μm diameter and numerical aperture of 0.22 after focused.
     在整形实验中测得变换后快、慢轴方向的光参数积分别为12 mm·mrad和9.5 mm·mrad,经透镜聚焦后能够实现与芯径200μm,数值孔径0.22的光纤耦合。
短句来源
     Focusing of Gaussian beam by an apertured lens with spherical aberration is calculated,based on Huygens Fresnel diffraction integral.
     从HuygensFresnel衍射积分出发,计算高斯光束经过初级球差透镜聚焦之后的衍射光场。
短句来源
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  lens focusing
It is shown that, for a local analysis of the thickness of layers and scattering parameters, the method of parabolic lens focusing has some advantages in comparison with the other methods.
      
A design for a plasma lens focusing the beam from the SIS-synchrotron with a typical rigidity of 6 T m is proposed.
      
Magnetic hexapole lens focusing of a metastable helium atomic beam for UV-free lithography
      
The dependence of the shaped profile on the illuminating amplitude distribution, the grating misalignment, and the lens focusing error is investigated by computer simulation and optical experiment.
      
A Hyperboloid Single Lens Focusing on a Spherical Image Surface up to Very High Angles of Incidence
      
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  field focus
At the same time, more parallel directional polarized local field focus in the poles of the wall along the incident polarization.
      
A related field focus on networks of organisations and short-term relationships.
      
In this volume, leading researchers in the field focus on these key questions.
      
Reports from the field focus on projects, tools and resources for researchers and practitioners working in children's environmental health.
      
The majority of studies in the service learning field focus on campus-based impacts of service learning and community service.
      
更多          
  focusing lens
Self-recovery of the transparency of a focusing lens in a laser mass spectrometer
      
An experience of operation of a laser mass spectrometer of multiply charged ions has shown an almost complete self-recovery of the transparency of a focusing lens (chamber window).
      
The effects of numerical aperture of the focusing lens, laser power and the medium flow velocity on the throughput are examined through the calculation of the separation area of a soda-lime glass micro-sphere moving in water.
      
In this paper, an observational sensor system for tele-micro-operation is proposed with a dynamic focusing lens and a smart vision sensor using the 'depth from focus' criteria.
      
This system is constructed with a dynamic focusing lens, which can change its focal distance at a high frequency, and a smart vision system, which is capable of capturing and processing the image data in high speed with SIMD architecture.
      
更多          
  lens focused
At the other end, another quartz lens focused the transmitted light onto a 25 mm2 UV-enhanced silicone photodiode equipped with a 254 nm filter.
      
Each camera uses a Nikon 105 mm f/4.5 UV Nikor lens focused on a plane coincident with the incident laser sheet.
      
The scattered radiation was collected back along the same optical axis, while a second f/2 lens focused the beam into the collection fiber optic.
      


In this paper, the experimental results of a high-current H2+ ion source are described. The ion source has been used as injector for a superconducting magnetic mirror machine. Due to improvement on the shape of the extraction electric field, the mean extraction field intensity has reached 106kV/cm and a total beam current of 700mA and beam density of 400mA/cm2 have been obtained. In optimum conditions the content of H2+ ions reaches 40% with a beam current of 130mA. This current reduces to ,50mA on a target...

In this paper, the experimental results of a high-current H2+ ion source are described. The ion source has been used as injector for a superconducting magnetic mirror machine. Due to improvement on the shape of the extraction electric field, the mean extraction field intensity has reached 106kV/cm and a total beam current of 700mA and beam density of 400mA/cm2 have been obtained. In optimum conditions the content of H2+ ions reaches 40% with a beam current of 130mA. This current reduces to ,50mA on a target 11m from the source, focused by a pair of magnetic quadrupole lenses and it is 15mA at the centre of the magnetic trap after passing through a 4×6 cm2 diaphragm.

本文叙述了用于稳态超导磁镜装置注入器的H_2~+离子源的实验结果。由于改进了引出系统的电场形态,使引出区平均电场达106千伏/厘米,引出离子束为700毫安,束密度为400毫安/厘米。在引出最佳状态下,H_2~+束含量为40%,束流强为130毫安,经过四极磁透镜聚焦,传输到距源11.8米处的流强为50毫安,经4×6厘米的限制孔注入到捕集室中为15毫安。

A two-axes automatic sun-tracking test installation is described.It has been designed,installed and used to determine the thermal performances of solar Collectors.It is shown by testing results that the installation can meet with the requirements of precise track,stable flow rate.Convenient and accurate control,and enough accuracy for measuring temperature and flow rate as well as radiation.Besides there is a unit which is able to adjust the incident angle.The efficiencies of three kinds of flat plat collectors,a...

A two-axes automatic sun-tracking test installation is described.It has been designed,installed and used to determine the thermal performances of solar Collectors.It is shown by testing results that the installation can meet with the requirements of precise track,stable flow rate.Convenient and accurate control,and enough accuracy for measuring temperature and flow rate as well as radiation.Besides there is a unit which is able to adjust the incident angle.The efficiencies of three kinds of flat plat collectors,a vacuum tube collector and a Fresnel lens concentrate to the vacuum collector have been tested.The total measuring error is estimated to be less than ±8%.The error in efficiency caused by "quasisteady state",stability in inlet temperature and selecting optimum flow rate,are discussed in detail.

本文描述的双轴自动跟踪太阳集热器热性能测试装置,跟踪精度高,流量稳定,控温方便、准确,温度、流量和太阳辐射通量的测量有足够精度,能调节改变太阳入射角。对三种平板集热器、一种真空管集热器和一种费涅耳透镜聚焦集热器作了热性能测定。测试总误差<8%。 本文还对“准稳态”方法的误差、进口温度及最佳流量的选择等测试中的几个主要问题进行了讨论。

A duoplasmatron ion source has been developed for making targets by its focused heavy ion beam sputtering.The argon ion beam of 1~2 mA can be produced and accelerated to a maximum energy of 10 keV.By adjusting the focusing effect of the einzel lens and discharge conditions of the ion source,the diameter of the ion beam spot on the target is minimized to about 2mm (the full width at 1/10 maximum of beam density distribution) and 1 mm (FWHM) .Continual operation times exceed 24 hours.

这是一台为聚焦重离了束溅射制靶装置研制的离子源。双等离子体离子源产生1~2mA的氩离子束,并被加速到10keV的能量。通过调节单透镜的聚焦作用和离子源的放电状态,可以使到达靶上的氩离子束直径(束密度最大值的1/10处的全宽度)在2mm左右,束密度最大值的1/2处的全宽度为1mm左右。源连续工作超过24小时。

 
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