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thz波
    Study on the transverse modes distribution of THz wave By THz imaging technology
    THz波传播过程中横模分布的成像研究
    In this paper, we detailedly introduced the characters of THz wave, the methods of generation and detection, and the progress of THz time domain spectrum detection, THz imaging and the applications in the biology technology and information technology in the recent ten years.
    本文较详细地介绍了THz电磁波的特性,产生及检测方法以及近十年来在THz时域光谱探测、THz成像和THz波在生物技术和信息技术领域的发展情况。
    Next the tunable of THz wave of temperature, grating period, the incident angle and the radiation angle were given.
    其次研究了THz波的温度调谐特性、极化反转光栅周期调谐以及改变入射泵浦光与光栅波矢夹角的调谐特性 ;
    This thesis mainly focuses on the pulsed THz time-domain imaging technique and continuous THz wave imaging technique for functional imaging and structure imaging. On the one hand, pulsed THz time-domain spectroscopy/imaging system must be established because there is no commercial product at present.
    本论文主要围绕THz成像技术中的两个重要研究方向——脉冲THz光谱成像和连续THz波成像——展开,从理论和实验的角度对系统的一些关键问题进行分析。
    The Nd∶YAG Q-switched laser with 1064 nm was used as the pump source,and the THz wave was tuned by changing the incident angle as well as the phase matching condition.
    使用波长为1064 nm的Nd∶YAGQ开关脉冲激光器作为抽运光源,通过改变入射角度使参变振荡器的相位匹配条件发生变化。 采用Si真空量热器,并利用THz波干涉测量仪;
    THz wave frequency can be detected with the THz interferometer and the Si bolometer,or by detecting the idle light frequency.
    或通过测量闲频光的频率对产生的THz波频率进行了测量。
    The THz wave beam pattern along the horizontal was measured with a metal-slit-detector. The influence of diffraction effect of the Si prism array on the THz wave beam spatial profile was discussed.
    使用金属缝隙探测器,对辐射的THz波的波束水平方向空间分布进行了测量,分析了Si棱镜阵列的衍射效应对THz波束空间分布的影响。
    How to resolve some sample parameters and reconstruct image using phase information and amplitude information of THz wave is investigated.
    并且对THz波相位信息成像和振幅信息成像进行了比较.
    The THz wave linewidth was measured by using a Fabry-Perot interferometer based on the metal mesh plate.
    还报道了一种基于平面金属丝网的法布里-珀罗干涉仪测量THz波线宽的实验结果.
    The transverse modes distribution of laser beam had been known for several decade years. However, people have not investigated on the transverse modes distribution of THz wave yet. In this paper, we studied the THz transmission characteristics in our THz generation and detection systems.
    激光的横模分布在几十年以前就已非常清楚了,但在这篇论文之前人们对THz波在传播过程中的横模分布情况研究还很少,本文研究了我们的THz产生与探测系统中THz波的传播特性。
    We have done some qualitative analysis on . THz transverse modes distribution in focus point, forward and backward of focus point using THz imaging technology. Then, applying "Slit method", we measured the beam width of THz wave.
    通过THz成像技术对THz波在焦点、焦点两侧的横模分布情况进行定性的分析,然后利用“狭缝法”测量了THz光束的束宽。
    In this paper we derive the analytical expressions of the plasma frequency and the refraction index of THz wave of the deep zero-order metallic grating structures, and we also theoretically analyze and numerically simulate the dependences of the transmission spectra on frequency, angle of incidence of terahertz wave, geometrical parameters of the gratings, and properties of metal and dielectric medium.
    本文推导出了THz波段亚波长尺度金属光栅的等离子体频率——这一影响器件特性的关键参数的解析表达式,同时理论分析并数值计算了影响THz波选择增强透射的诸多因素:THz波的入射频率及波束入射角度,器件的几何结构和构成光栅的材料等.
 

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