• We have also discussed the effect of the beam divergence on the second harmonic conversion efficiency.

    讨论泵浦束发散二次谐波转换效率影响

    dict.cnki.net

  • Objective To investigate the application of SonoVuecontrast-enhanced ultrasound and second harmonic imaging in liver hemangioma.

    目的探讨超声造影谐波成像技术血管瘤中的应用

    dict.cnki.net

  • The green-emitting laser diode offers a number of compelling advantages compared to an equivalent green-output second harmonic generation (SHG) device.

    绿色发光二极管激光器提供绝对优势相比同等绿色输出谐波产生(倍)设备

    blog.sina.com.cn

  • Some examples are discussed for second harmonic heating as well as the minority heating.

    最后讨论二次谐波加热少数成份离子加热实例

    dict.cnki.net

  • Objective To discuss the value of second harmonic imaging in diagnosing pancreatic masses.

    目的探讨二次谐波技术胰腺肿块诊断价值

    dict.cnki.net

  • The dynamic velocity taper and induced second harmonic are analyzed which improve the miniature TWT efficiency using computer simulation based on Rowe large signal theory.

    本文罗埃信号理论基础,对提高小型化行波管效率动态速度渐变技术二次谐波的抑制问题进行模拟计算分析

    dict.cnki.net

  • The cause of symmetric inrush is analyzed, and the simulation results show that the ratio of second harmonic in the symmetric inrush is not lower than that in the asymmetric inrush.

    同时,分析变压器对称涌流产生原因计算说明对称涌流中的二次谐波并不一定单侧涌流

    dict.cnki.net

  • A primary study was carried out and the results revealed that phenylurea had fairly strong nonlinearity, its powder second harmonic generation efficiency was 11 times larger than that of urea.

    苯基脲具有很强二阶非线性光学效应粉末谐波产生效率为尿素11

    dict.cnki.net

  • As a new technology of nonlinear microscopic imaging, second harmonic generation (SHG) have been widely used in all fields of medicine and biology.

    二次谐波非线性显微成像技术是近年发展起来一种新型光学成像方法,广泛应用生物医学各个领域

    www.lunso8.com

  • Methods Observation were done in 30 old patients who successfully underwent myocardial contrast imaging using second harmonic imaging technology.

    方法超声二次谐波心肌造影30患者进行观察

    www.chemyq.com

  • However, the multiplicative noise can enhance the fluctuation of fundamental light, meanwhile it can reduce the fluctuation of the second harmonic light.

    当激光场中含有噪声时,噪声增强涨落同时抑制二次谐波涨落

    www.opticsjournal.net

  • Detecting visualization of segmental renal trauma on both second harmonic imaging(SHI)and color Doppler energy imaging(CDEI)before and after enhanced ultrasonography.

    分别谐波显像彩色能量多普勒成像,观察造影前后局部损伤的位置、范围及回声

    dict.cnki.net

  • Photon energies of the whole range were calibrated using the second harmonic for high energies and the fermi edge of gold for low energies.

    利用纯金样品二次谐波费米分别高能低能部分入射光子能量进行标定,并给出系统能量分辨率。

    epub.cnki.net

  • The material has promising application prospects in fields of optoelectronic switches, nonlinear optical second harmonic, quick response liquid crystal display and the like.

    材料光电开关非线性光学二次谐波响应液晶显示等方面广阔应用前景

    ip.com

  • This paper presents a new control strategy to eliminate second harmonic of dc output current in the 3-phase unbalanced network voltage PWM current-source converters (CSC).

    提出电网电压不对称情况下抑制三相脉宽调制(PWM)电流变流器(CSC)直流输出电流二次谐波减少网侧电流低次谐波控制方法

    dict.cnki.net

  • Objective: to have an acoustic densitometry (AD) analysis about the relationship between doses and effects in experiment rabbit liver with second harmonic contrast imaging.

    目的:利用实验性二次谐波成像中的剂量-效应关系进行声学定量分析

    dict.cnki.net

  • Synthesises eighteen kinds of cinnamylidene acetophenone derivatives and discusses their properties of IR, UV, photoacoustic spectrum , X ray diffraction and second harmonic generation (SHG).

    合成十八个二苯基烯酮化合物,进行了一系列性质测试,包括红外紫外、核磁共振、粉末X衍射、光光谱倍频性质等

    www.chemyq.com

  • In Cerenkov second harmonic generation (CSHG) scheme, the phase matching condition is satisfied automatically, but the conversion efficiency is low.

    伦科夫方案相位匹配条件可以自动满足但是倍频效率

    dict.cnki.net

  • By using coupled-mode equation, the formula for conversion efficiency of Cerenkov second harmonic generation (CSHG) is deduced in this paper.

    耦合方程出发,推导切伦科夫倍频转换效率公式得出效率主要由交叠积分决定的结论;

    dict.cnki.net

  • Based on the optical rotatory dispersion effect, an optical filter for selecting the second harmonic of a frequency-doubled laser is constructed from quartz in combination with polarizers.

    针对激光中存在基实际情况,依据石英晶体特性,利用石英晶体起偏棱镜组合,设计了一种用于去除倍激光中基光学滤波器

    www.opticsjournal.net

  • The optimized KTP was used for second harmonic generation(SHG) in CW laser.

    本文利用改性KTP晶体,进行了纯连续激光倍频实验

    d.wanfangdata.com.cn

  • Methods:6 normal dogs were imaged with fundamental and second harmonic imaging technics after intravenously injection of the new contrast agent.

    方法6 只健康杂种外周静脉注射相同剂量氟碳声学造影剂分别二次谐波和基波显像扫描肝脏。

    dict.cnki.net

  • Superharmonic imaging is made for biological tissues and compared with the results from fundamental and second harmonic imaging.

    生物组织进行了谐波成像波、二次谐波图像对比

    dict.cnki.net

  • The optical second harmonic signal was observed using a ND:YAG laser, The mechanism of SHG was discussed.

    NdYAG激光场的作用下,薄膜样品中观察到谐波信号并分析了谐波发生的机理

    dict.cnki.net

  • According to the nonlinear re-radiation characteristic of semiconductor PN node, the nonlinear node detection system for semiconductor junction targets based on second harmonic reception is designed.

    根据非线性半导体p N再辐射特性设计了一种基于二次谐波接收非线性节点探测系统

    www.teleonline.cn

  • Second Harmonic Generation by periodic domain structure of nonlinear optical waveguide has been studied experimentally. Here reports a method for SHG.

    本文研究光轴周期反转结构波导实现方法,利用这种结构波导进行非线性实验

    dict.cnki.net

  • The results show that group-velocity mismatching is the main reason of the broadening of the second harmonic pulse and could lead to the decrement of conversion efficiency.

    研究结果表明,群速度导致脉冲宽度增大转换效率降低,非线性相位调制使脉冲形状发生畸变,降低转换效率

    www.dictall.com

  • Furthermore, the degree of collagen damage in the residual thermal zone was evaluated by quantitative analysis of second harmonic generation signals.

    我们能够更进一步定量分析减少程度来 评估雷射后剩馀伤害程度

    www.docin.com

  • Three numerical cases are considered for the loading responses of stratified viscoelastic earth to second degree harmonic load, uniform disc ice load, and last-glacial realistic ice load respectively.

    本文设计了三个数值算分别模拟径向分层地球阶球负荷均厚圆盘负荷全球末次冰期真实负荷响应

    dict.cnki.net

  • Three numerical cases are considered for the loading responses of stratified viscoelastic earth to second degree harmonic load, uniform disc ice load, and last-glacial realistic ice load respectively.

    本文设计了三个数值算分别模拟径向分层地球阶球负荷均厚圆盘负荷全球末次冰期真实负荷响应

    dict.cnki.net

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