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  beam modulation
The initial stages of formation of an Yb-Si(111) interface are investigated by several methods: thermal desorption spectroscopy, atomic beam modulation, and low-energy electron diffraction.
      
The initial stages in the formation of the Sm-Si(111) interface have been studied by thermal desorption, atomic beam modulation, and low-energy-electron-diffraction spectroscopy.
      
As shown by the laser beam modulation technique, the polarization was distributed nonuniformly in depth, with most of the poled state localized near the lower interface of the thin-film ferroelectric capacitor.
      
The beam modulation coefficient reaches 70% for a pulse duration ?0.3 μs, making the detector well suited to gas-analysis applications.
      
Multiple beam modulation and direction-finding transmitted by square-corner antenna
      
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The modulating effect of holographic plate motion on recorded beams and its influence on the measured results have been studied in this paper. A mathematical expression of the intensity distribution of double exposure-fringe pattern with recorded beams modulated by the holographic plate motion is derived. Based on theoretical investigation of the modulated fringe formation, the holographic analytical method of three dimensional displacements of a measured object when the plate motion exists is proposed. The...

The modulating effect of holographic plate motion on recorded beams and its influence on the measured results have been studied in this paper. A mathematical expression of the intensity distribution of double exposure-fringe pattern with recorded beams modulated by the holographic plate motion is derived. Based on theoretical investigation of the modulated fringe formation, the holographic analytical method of three dimensional displacements of a measured object when the plate motion exists is proposed. The displacements of the plate are determined by means of a reference object.

本文研究干版运动对记录光束的调制作用及其对双曝光全息测量的影响,推导了干版运动调制光束双曝光干涉图的光强分布数学表达式,在对这种调制干涉条纹形成理论的研究基础上,提出了有干版运动时被测物体三维位移场的全息分析法,其中干版的位移用参考物体法确定。

The modulating effects of the holographic plate motion on recorded beams and on measuring results have been proposed in this paper. The mathematical expressions of intensity distribution are derived for the double exposure interferogram which are recorded with the beams modulated by the holographic plate motion. Based on the theoretical study of formation of the modulated fringes, the holographic analytical method of 3D displacement field of the measured object is proposed. The displacement of the plate is determined...

The modulating effects of the holographic plate motion on recorded beams and on measuring results have been proposed in this paper. The mathematical expressions of intensity distribution are derived for the double exposure interferogram which are recorded with the beams modulated by the holographic plate motion. Based on the theoretical study of formation of the modulated fringes, the holographic analytical method of 3D displacement field of the measured object is proposed. The displacement of the plate is determined with the help of the reference object.

本文提出了干版运动对记录光束的调制作用及其对全息干涉计量的影响,推导了干版运动调制光束双曝光干涉图的光强分布的数学表达式.在对这种调制干涉条纹的理论研究基础上,提出了被测物体三维位移场的调制光束全息分析法.其中干版的运动用参考物体法确定.

Four types of parallel beam-splitting polarizer are provided using a birefringent crystal. The features of the devices are large displacement, high extinction ratio, high transmittance and small splitting angle. They are expecially designed for the usage of optical switch and modulating systems, and with calcite as an example, the properties of several differet designs are compared.

利用双折射晶体的反射和折射特性提出四种两元复合式平行分束偏光棱镜设计,其特点是分束距大,消光比和透射比高,分离角小,非常适宜于大间隔光束调制和光开关系统,以冰州石晶体为例给出了各器件的工作参数。

 
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