光子

This character of the photonic crystal containing defect can be used to enhance spontaneous emission of atoms and to make narrow band filter.

为了能对光子晶体进行数值计算，人们一直不遗余力的在寻求新的计算方法。

A rate equation model is introduced, in which the intracavity photon density is assumed to be Gaussian spatial distribution and the pump beam spatial distribution is also considered.

考虑腔内光子数密度的高斯空间分布以及抽运光的空间分布，给出了描述调Q激光器工作原理的耦合速率方程组，其数值解与实验结果相符。

We use continuous wave laser beam to pump nonlinear crystals and successfully prepared two-photon polarization entangled states with high brightness and entanglement degree.

我们利用连续波激光束泵浦非线性晶体的自发参量下转换过程制备出了双光子偏振纠缠态，其纠缠源亮度和纠缠度都接近于国际上同类研究的领光水平。

Through various means (for example, to inject a small number of PN junction carrier) disturbance belt electronic price band Hole and the balance of concentration, according to which non-minority-carrier in the compound and a photon.

通过各种方法(例如向PN结注入少数载流子)扰动导带电子和价带空穴的平衡浓度，致使非平据少数载流于复合而产生光子。

The result is quite amazing: Although there is only one photon, as long as there are two gaps there, there are black and white stripes on the bromide paper.

虽然只有一个光子，但是只要有双罅缝，最后冲洗出来的感光胶片上就有黑白相间的条纹。

In this paper the experimental results of laser multiphoton ionization of background gases (mostly oil-vapor) in the vacuum chamber for laser produced plasma study are presented by using high power laser irradiation.

本文报道了在高功率密度激光辐照下，激光等离子体研究用的真空室中背景气体(主要是真空系统中的油蒸气)的多光子电离的实验研究结果。

The structure consists of at least two active regions emitting light with different main wave length, each of them has its own optical waveguide limit layer, two or multiple optical spectrum with different main wave length are mixed together to produce white light; cleavage cavity surface of both sides are plated reflecting film to form photon resonant chamber, light-emitting direction is all from side, this structure is suitable for LED with GaN or ZeSe base or other materials, the substrate is mode of sapphire, SiC or other materials.

本发明是一种直接出射白光的高亮度功率型LED芯片，其结构是：设有至少两个发射不同主波长光的有源区，每一个有源区具有各自的光波导限制层；两种或者多种主波长不同的光谱混合在一起产生白光；其两侧的解理腔面都镀有反射膜，形成光子谐振腔；光出射方向为全侧面出光，此种结构适合GaN基或ZeSe基的LED，或者其它材料的LED；其衬底是蓝宝石衬底，或SiC衬底，或者别的衬底材料。

When several ultrafast pulses are propagating simultaneously, nonlinear processes such as cross-phase modulation, cross non-degenerate TPA, SRS and four-wave mixing, and so on, will be considered. One of the nonlinear processes will play dominance for various conditions.

当多波长超快脉冲在波导中传输时，脉冲之间将发生交叉相位调制、交叉非简并双光子吸收、受激拉曼散射和四波混频等非线性过程，在不同的条件下，将具有不同的非线性过程起主导作用。

Moreover,the larger the decay coefficient is,the more rapidly the phase becomes random distribution.

另外，随光场的平均光子数增大，光场相位分布趋于集中。

And a number of national patents, research and development of laser marking machine, laser engraving machine, laser eyebrow washing machines, Photorejuvenation machine, laser therapy instrument, pneumatic marking machine, plate embossing machines and other products, and laser components Products , such as krypton lamps, xenon lamps, CO2 laser tube, optical lenses and other series.

并获得多项国家专利，研制开发的激光标记机、激光雕刻机、激光洗眉机、光子嫩肤机、激光治疗仪、气动标记机、标牌压印机等系列产品，和激光元器件产品，如氪灯，氙灯，CO2激光管，光学镜片等系列。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。