光子

It is believed the study might be significant for the application of quasi-periodic nonlinear photonic crystal in practice.

该项研究对于准周期非线性光子晶体在实际工作中的运用具有重要的指导意义。

These help us to optimize our photonic crystal design. And then, a modified quasi-periodic photonic crystal microcavity laser was designed.

这些有效的计算方法帮助我们能最佳化我们的光子晶体设计，并且把这些设计确实的应用在我们的制程当中。

In the membrane structure, we demonstrated the basic photonic crystal lasers and the 12-fold quasi-periodic photonic crystal lasers.

我们在对称的薄膜结构上做了许多种不同设计的光子晶体元件去研究。

The transmission spectrum of quasi-periodic 1-D photonic crystal containing Left-Handed Materials is calculated by transfer matrix method,and its law of changes is analyzed.

利用传输矩阵法，计算了含左手材料的一维准周期光子晶体的透射谱，并分析了其变化规律。

Based on the principle of solar radiation pressure, the author reveals two natural phenomena.

河北省地震局，石家庄 050021）摘要：依据太阳光子辐射产生的光压理论，作者揭示出了自然界存在有如下两种自然现象：（1）揭示了日—地间天然形成的能量相耦合的&轧制&式和&摇摆&式物理机制及其存在的证据。

A retrieval algorithm of high resolution wind speed and direction is researched, and the method and software of wind lidar signal process, as well as the wind retrieval software, are mature.

研究了光子计数激光测风技术中高精度风速及风向反演方法，完成了激光测风信号及数据处理方法及软件。并完成了风场反演软件。

An explicit analytical solution of the threshold pump power of the laser has been derived based on rate equations which contain the attenuation coefficients of the pump and laser radiations as well as the major contribution of the re-emission of the upper level atoms to the pump wave by using the analytical solutions. An analytical solution of the minimum fiber length required for the onset of the oscillation is presented. In addition, the analytical solutions describing the variations of the density of the pump radiation and upper laser level population along the fiber length have also been given.

从速率方程组出发，在不忽略光纤损耗系数和保留再发射项主导部分的近似条件下推导出了双包层光纤激光器阈值泵浦功率的显函数解析表达式，得到了光纤激光器产生振荡所需的最小光纤长度的显函数解析解；还给出了泵浦光子数密度和上能级粒子数密度沿光纤方向随光纤长度变化的显函数解析解。

They are still in use today because they are well-understood and easy to fabricate, but have a number of disadvantages compared to devices based on photonic crystals.

这种谐振腔之所以仍在使用，是因为其更易于理解和装配，但是较之于基于光子晶体的设备来说，则具有很多的不足。

We can use the defect in the photonic crystal to guide the electromagnetic wave, and this photonic crystal with defect can be used to make photonic crystal devices.

在前人研究的基础上，我们对二维正方晶格和六方晶格光子晶体缺陷的带结构进行了计算。

In general, people are more interested in the photonic crystal with defect, because the defect in photonic crystal can localize and guide electromagnetic wave.

本文采用有限差分时域方法计算了二维光子晶体直波导的带结构和其中的局域模式。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。