混频

A possible configurate to improve the absorption efficiency of the pump energy has been proposed. With the theory of four waves mixing, we have demonstrated this scheme. By introducing the scheme into self-pumped conjugater, the performance of diode laser array with self-pumped conjugate was enhanced, the usage of incident light was improved apparently.

利用双四波混频作用区理论分析了该配置方式的合理性，并把这种配置方式引入到自泵浦相位共轭镜中，对整个利用自泵浦相位共轭镜的半导体激光器列阵实验方案进行了改进，从而显著提高了入射光束能量的利用率。

From BaTiO_3:Ce self-pumped phase conjugator, it is theoretically analysised and experimentally demonstrated that non-negative effect of incoherent beam on the four waive mixing region in photorefractive phase conjugator.

本文以BaTiO3：Ce自泵浦相位共轭镜为例，理论上和实验上对非相干光作用在光折变相位共轭镜的四波混频区产生的非负效应进行探讨和验证。

Finally,we have employed phase-diffusion model to study the effects of laserfield correlation on the Raman-enhanced nondegenerate four-wave mixing.Thedifferent roles of the field fluctuations have been pointed out.

最后，我们利用相位扩散模型研究了拉曼增强非简并四波混频中激光场的相关效应，指出了光场涨落的不同作用。

We apply nondegenerate four-wave mixing processes to the generation of stable continuous variable entangled light and study the time evolution of continuous variable entangled light.

利用非简并四波混频体系制备出稳定的连续变量的纠缠态，研究了纠缠随时间的演化情况。

Efficiency of nondegenerate four-wave mixing in a long-cavity DFB laser diode［J］.

长腔DFB半导体激光器非简并四波混频波长转换效率［J］。

In chapter 5, the intensity formulae of two-and four-wave mixing are derived in the undepleted pump approximation for super saturation regime.

第五章推出了过饱和段小信号双光束耦合与四波混频的强度公式。

Whereafter FWM relative time has been studied, the experiment result which accord with theory simulation has been gained, and the error source has been analyzed.

之后对四波混频时间相干性进行了实验研究，得到与理论模拟相符合的实验结果，并对误差来源进行了分析。

Also, the thesis presents the detailed analysis of the CMOS commutating Gilbert Mixer, which is the most widely used currently.

针对应用最广泛的吉尔伯特型混频器，文章较为详细地分析了它的性能特点，并探讨了指标之间的折衷关系。

A first pair of decimation filters (206, 208) decimates and filters the output of the delta sigma samplers (202, 204) but keeps the samples at a rate sufficient to perform digital mixing, cross adding, and pulse shape match filtering.

第一对抽取滤波器(206，208)抽取并滤波增量总和采样器(202，204)的输出，但是使该采样保持足以进行数字混频、交叉相加以及脉冲波形匹配滤波的速率。

We are also installing automatic slide gate and hooding over the mixers to take out the duct while cleaning the mixer.

我们还安装自动滑门，在混频器戴头罩，以取出导管，清理搅拌机。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了