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thz wave     
相关语句
  太赫兹波
     Transverse Mode Distribution of THz Wave by THz Imaging Technology
     太赫兹波传播过程中横模分布的成像
短句来源
     In addition, we also get several conclusions as follows: 1) Power of TM mode THz wave reaches a maximum when laser incident angle nears the Brewster angle;
     此外,还有以下几个结论:1)当激光脉冲入射角在布鲁斯特角附近时,磁场增强后的太赫兹波中TM模分量功率达到最大值;
短句来源
     The results show that the shapes of the transverse modes of THz wave in different positions around the focus have much difference. To the maximum wavelength of about(1.5 mm) of THz wave in the system,the minimum diameter of THz beam at the focus point is around(1.0 mm.) The results provide a basic reference for further application of THz Spectroscopy and THz Imaging.
     利用“狭缝法"测量了太赫兹光束的束宽。结果表明,太赫兹波在焦点附近不同位置的横向分布有较大差异,在焦点处对应于最长波长1.5 mm的最小光斑直径约为1.0 mm,这说明太赫兹波的聚焦有一定的限度。实验确定了系统中放置样品的最佳位置,对开展太赫兹光谱和成像研究有参考价值。
短句来源
     The generation and detection of THz wave,particularly by using the photoconductive antenna,optical rectification and non-collinear phase matched THz OPO,are introduced.
     详细介绍了利用光导天线、光整流和光学参量振荡器产生太赫兹波,以及利用电光效应和光导偶极天线探测太赫兹波的方法。
短句来源
     These results suggest that it is of great significance to use THz wave in illicit drugs inspection.
     说明太赫兹波应用于毒品检测和识别是可行的、有意义的。
短句来源
  thz辐射
     The main results and conclusions are listed as follows:1) Experimental measurements with low Cd composition Zn1-xCdxTe<110>crystals(0THz wave generation declines with increasing the ratio of Cd.
     1.对于不同组分的Zn_(1-x)Cd_xTe<110>单晶,当x=0.05时,作为THz辐射产生器件,具有最好的性能,随着Cd组分的增加,晶体产生THz辐射的效率逐渐降低。
短句来源
     Chirped pulse cross-correlation for THz wave measurement
     啁啾脉冲互相关法探测THz辐射
短句来源
     Effective generation of THz wave is a basic issue in experiments evolving THz radiation.
     在THz辐射成像和光谱分析实验中,如何有效地产生和探测THz脉冲具有非常重要的意义。
短句来源
     4) The THz resistivity of doped Zn0.95Cd0.05Te<110> crystals changes withdifferent doping following the similar way as the DC resistivity, which results in different THz wave generation efficiency.
     5.对于不同掺杂的 Zflo的Cd*。 Teq10>单晶,当晶体的电阻率较大时…入0‘Q,cmX 晶体产生的 THz辐射信号逐渐增大。当晶体的电阻率 p>106 Qcm时,晶体产生THZ辐射的效率达到饱和甚至可能下降。
短句来源
     Scientists have studied different electro-optic crystals as a THz waves emitter, and they found that the ZnTe crystal is the best for THz wave generation. Therefore, ZnTe crystal has been the most common material for pulsed THz wave sensing and imaging applications.
     国际上,许多科学家对大量电光晶体产生和探测THz辐射进行了研究,发现ZnTe电光晶体作为THz脉冲产生和探测材料,其总体性能优于其他电光晶体,目前在THz辐射实验中应用得最广泛。
短句来源
更多       
  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
     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 ;
短句来源
     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。
短句来源
     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。
短句来源
     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.
短句来源
更多       
  辐射的thz波
     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。
短句来源

 

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      thz wave
    Frequency tunable high-power THz wave generation has been successfully achieved utilizing lattice resonance of LiNbO3 and GaP crystals, respectively.
          
    The terahertz region is between the optical wave and the so-called microwaves; it had not been studied until 1963, when Nishizawa started the development of a THz wave generation based on the character of lattice or molecular vibrations.
          
    THz wave sensing for petroleum industrial applications
          
    In addition, a wide band frequency tunable electromagnetic wave source may be developed at THz wave region by providing a low loss microstrip line resonator with field emission array due to the gate voltage dependent phase constant of the line.
          
    The amplification constant of 28dB/mm is achieved at THz wave region by applying the monotron to a distributed amplifier and is sufficient to overcome power loss in a transmission line.
          
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    Terahertz (THz) wave or T - ray, electromagnetic radiation in a frequency interval from 0.1 to 10 THz, is the next frontier in imaging science and technology. THz radiation, or THz wave, occupies a large portion of the electromagnetic spectrum between the infrared and microwave bands (in different units: 1 THz or 1 ps or 300 μm or 33 cm-1 or 4.1 meV or47.6°K.). However, compared to the relatively well-developed medical imaging at microwave and optical frequencies, basic research,...

    Terahertz (THz) wave or T - ray, electromagnetic radiation in a frequency interval from 0.1 to 10 THz, is the next frontier in imaging science and technology. THz radiation, or THz wave, occupies a large portion of the electromagnetic spectrum between the infrared and microwave bands (in different units: 1 THz or 1 ps or 300 μm or 33 cm-1 or 4.1 meV or47.6°K.). However, compared to the relatively well-developed medical imaging at microwave and optical frequencies, basic research, new initiatives and advanced technology developments in the THz band are very limited. THz band is a scientifically rich but technologically limited frequency band, due to the less developed THz wave emitters and receivers, compared with its neighboring bands (microwave and optical bands) . During the past decade, THz waves have been used to characterize the electronic, vibrational and compositional properties of solid, liquid and gas phase materials. It is a common belief that the future ' killer-application ' of THz waves will be in biomedicine. This article overviews terahertz wave generation, propagation, detection, and application, with emphasis on state-of-the-art science and technology.

    本文介绍了太赫兹波的一些重要性质,太赫兹波的产生和探测技术,以及目前国际上在太赫兹波的基础研究和应用基础研究方面的最新进展,并简单讨论了太赫兹波技术的发展前景。

    Properties of differently doped Zn 0 95 Cd 0 05 Te〈110〉 crystals as te rahertz (THz) wave emitter are studied using THz time- domain spectroscopy. It i s observed that the THz generation efficiency increases as the DC resistivity in creases when the resistivity of crystals is greater than 10 2 Ω·cm, but the e fficiency saturates and even declines when the resistivity goes beyond 10 6 Ω·cm . It is revealed that the dispersion properties of crystals play an im portan t...

    Properties of differently doped Zn 0 95 Cd 0 05 Te〈110〉 crystals as te rahertz (THz) wave emitter are studied using THz time- domain spectroscopy. It i s observed that the THz generation efficiency increases as the DC resistivity in creases when the resistivity of crystals is greater than 10 2 Ω·cm, but the e fficiency saturates and even declines when the resistivity goes beyond 10 6 Ω·cm . It is revealed that the dispersion properties of crystals play an im portan t role, besides the doping-dependent absorption in THz region.

    利用太赫兹 (THz)时域光谱技术研究了不同掺杂的Zn0 95 Cd0 0 5 Te〈110〉单晶产生THz辐射的特性 .实验发现 ,当晶体的直流电阻率 ρ >10 2 Ω·cm时 ,晶体产生THz辐射的效率随着晶体电阻率的增加而增加 ,但当电阻率 ρ >10 6Ω·cm时 ,晶体产生THz辐射的效率出现饱和甚至可能下降 .光谱测量结果表明 ,此类晶体在THz波段的透过率基本上取决于其低频电阻率 ,但除了晶体对THz辐射的吸收这一因素外 ,其色散性质的变化对晶体的THz辐射性能也有重要的影响 .因此 ,当ZnCdTe晶体用于THz辐射产生和探测时 ,仅仅用材料的Hall电阻率不能完全表征器件的性能

    The terahertz (THz) wave generated in periodically poled lithium niobate (PPLN) forward propagation and backward propagation, and the surface-emitted THz radiation were investigated based on the theory of optical parametric oscillator first. Next the tunable of THz wave of temperature, grating period, the incident angle and the radiation angle were given. Thirdly, the bandwidth of the wavelength and the frequency of THz wave were analyzed, and the analytic expressions were given....

    The terahertz (THz) wave generated in periodically poled lithium niobate (PPLN) forward propagation and backward propagation, and the surface-emitted THz radiation were investigated based on the theory of optical parametric oscillator first. Next the tunable of THz wave of temperature, grating period, the incident angle and the radiation angle were given. Thirdly, the bandwidth of the wavelength and the frequency of THz wave were analyzed, and the analytic expressions were given. The theoretical results fit well with the experimental results given by Y.S. Lee et al.At last, the bandwidth of temperature, grating period, the incident angle and the radiation angle were given.

    首先采用光参量振荡的机理研究了THz波在准相位匹配媒质周期极化铌酸锂晶体中同向传播与反向传播情况下 ,以及THz波从晶体表面辐射产生的特性 ;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 ;然后分析了THz波谱宽特性 ,给出解析表达式 ,并与实验结果进行了比较 ,证明理论分析结果与Y .S .Lee等人所给出的实验结果符合很好 ;最后分析了THz波的稳定性与温度、光栅周期、泵浦入射角以及辐射角的关系

     
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