光

This system uses a ring structure instead of complex multiangular optics structure.

导师王乃彦院士提出了应用激光能量储存环技术的多脉冲放大技术，这个技术是将种子光分解成同一方向上间隔相等的序列脉冲，通过放大器进行放大，放大的序列脉冲依次注入激光能量储存环中的拉曼池通过受激拉曼效应将能量传递给在激光能量储存环中的回转的一个stokes光，最后通过电光开关将经过多次放大的stokes光引出。

Making use of the analytical expression,one has researched this laws of the parametric bandwidth vs the wavelength of signal light,pump light and the noncollinear angle through the method of numerical calculation.

结果表明，对于同一抽运光，随着信号光波长的增加，参变带宽将先增加而后减小，即参变带宽存在着最大值；随着抽运光波长的减小，参变带宽将增大；对于同一信号光和抽运光，随着非共线角α的增大，参变带宽Δλ将逐渐增大。

Based on noncollinear optical parametric amplification in periodically poled lithium niobate which is realized by quasi-phase matching technology, we consider the possibility of semi-noncollinear phase matching method between collinear and noncollinear geometry.

基于周期性极化铌酸锂晶体的准相位匹配光参变放大过程，通过倾斜周期极化铌酸锂晶体中极化域一定角度，实现了介于共线匹配方式和非共线匹配方式之间的一种半非共线型准相位匹配方式，并以该匹配方式下的各光矢量几何关系得出相位匹配曲线，找到在特定抽运光和信号光波长下能获得宽带增益放大的周期极化长度。

Recently a third hybrid light-emitting layer has been developed that uses nonconductive polymers doped with light-emitting, conductive molecules. The polymer is used for its production and mechanical advantages without worrying about optical properties. The small molecules then emit the light and have the same longevity that they have in the SM-OLEDs.

近十几年来，随着人们对半导体发光材料研究的不断深入，LED制造工艺的不断进步和新材料的开发和应用，各种颜色的超高亮度LED取得了突破性进展。1993年，开发出来的以蓝宝石为衬底的GaNLED就是典型代表，它能发出绿光、蓝光和紫罗兰光。

This sequence,which involves both photosystems,is termed noncyclic electron flow.

当被光激发时，一对电子被激活并离开光系统Ⅱ，由H2O所光解产生的电子所替代，2H2O→O2+4H++4e-。

Photodissociation spectroscopy of the complexes Mg~+-NCSCH_3 Mg~+-S_2(CH_3_2 in the spectral region of 230-440nm was oberserved. As to Mg~+-NCSCH_3 of photo-induced reaction, there were three channels. And there are the products Mg~+ from nonreaction quenching and reactive products Mg~+NC, Mg~+NCS in the reaction throughout the whole wavelength range.

观察了复合物Mg~+-NCSCH_3Mg~+-S_2(CH_3_2在230～440nm范围的光解离光谱，在此波段内的复合物光诱导产物的质谱显示，对Mg~+-NCSCH_3：光诱导反应有三个通道，存在着非反应猝灭产物Mg~+和反应产物Mg~+NC、Mg~+NCS。

Results show that nonspiral plate may adjust the optical intensity distribution in focal region considerably, so we can alter and control the optical intensity distribution in fbcal region by changing the vary rate of phase variation. This technique can be used to carry particles in optical tweezers system

数值模拟结果表明：通过调节相位片的相应变化率，可能方便地调节焦点区域光强分布，因此可通过调节相位片的相位变化来控制和改变焦点区域光强分布，这种技术方法可应用于光钳系统中控制搬运微小颗粒。

And local dark focal spots may be obtained, the focal spot may evolve into a circle, a two-peak spot, or a curve line, which indicates that the combination of nonspiral and spiral phase plates can be used to form novel focal spots.

随着相位片参数变化，焦斑可演化成环形焦斑、具有两个光强峰值的焦斑、或是曲线形焦斑，这些现象说明可以将螺旋和非螺旋两种相位片结合用来调节焦点光强分布，得到新型焦斑。标签相位片焦点移动焦点破裂光陷阱

Forbidden-band-width of mono-clinic phase of bismuth vanadate (mBiVO4) is high enough to 2.3-2.4 eV, it could be valence band to carry out entirely that hole band degrade organic pollutants,and the conduction band possesses high oxidizability to make for reduction of photoinduced electron,and oxidation potential of its valence band with 2.4 eV nearby could achieve decomposition of water and degradation of organic pollutants under visible light.

单斜晶相钒酸铋(mBiVO4)的禁带宽度为2.3 - 2.4 eV，它足够高的价带完全可以实现空穴对有机污染物的降解，并且导带位置也有利于光生电子的还原，具有较高的氧化能力，且其价带氧化电位位于2.4 eV附近，可实现在可见光下分解水和降解有机污染物。本文综述了mBiVO4应用于降解污染物、光解水产氧以及光电化学分解水的研究概况，及其在光催化降解有机物等领域的应用前景。

Bismuth oxyhalide compounds show better photocatalytic activities than TiO2 (P25). With the increasing of X atomic numbers, photocatalytic activities of BiOX are enhanced in sequence.

卤氧化铋的光催化活性普遍优于商品TiO2 (P25)的光催化活性，并且随着卤素原子序数的增加光催化活性逐渐增强。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。