折射率

The numerical results indicate that the collimating performances of two lens changed little as the increasing of the refractive index and this made it possible to choose the material of the lens in more field.Theoretically,the radiation angle of laser diode beams in the quick axis can be compressed under 0.1 mrad.

结果表明：这两种柱透镜的准直效率随折射率的变化不大，这在一定程度上提高了透镜材料选择的灵活性；并且理论上，共轴双半椭圆柱透镜可以将半导体激光光束快轴方向的发散角压缩到0.1 mrad量级。

The lens axicon is based on the use of the spherical aberration of the mirror surfaces,which is inexpensive and easy to manufacture into a element with large apertures as compared with diffractive axicons,refractive cone axicons,and earlier lens axicons with aspheric surfaces;the opaque disk can offer the Bessel beams with long non-diffracting distances,and the diameter of the central peak is adjusted by choosing the focal length of the collimating lens;the tunable fluidic conical lens is a new device for generating Bessel beams,which can obtain the Bessel beams with different parameters by varying the refractive indexes of the solution which is filled in the device.

双透镜轴棱锥法主要基于透镜球面像差的运用，与衍射轴棱锥、折射轴棱锥和早期的非球面轴棱锥相比，具有加工简单、便宜，易于制作大尺寸的特点；不透明障碍物法得到的贝塞尔光束具有很长的无衍射距离，其直径可通过选择不同焦距的准直透镜来得到调节；可调流体轴棱锥是一种产生贝塞尔光束的新型器件，它可以很容易地通过改变注入器件的液体的折射率来得到不同参量的贝塞尔光束。

The glass with colour and refrective index resemblance to ruby is obtained by adjusting the proportion of formula and heat-treatment temperature in the experiments.

通过在实验中调整配方的剂量和热处理温度，得到与红宝石的折射率和颜色相近的玻璃。

The motive of this paper is to investigate the effect of processing parameters on the properties of silicon nitride and the coverage performance of insulator layer, and the effect of the film thickness of interface layer on the conduction current performance of thin film transistor.

本文旨在研究探索工艺参数对氮化硅薄膜的性能(如光禁带宽度、相对介电常数、折射率等)和钝化层氮化硅薄膜台阶覆盖性能的影响，以及栅界面层氮化硅薄膜厚度对薄膜晶体管导通电流性能的影响，制备性能优良的氮化硅薄膜。

Through research, the relationship among cured depth and concentration of photoinitiator, exposure energy, concentration of monomer, ratio of monomer to cross linker, refractive index of liquid, volume fraction of powders, mean diameter of powders are confirmed.

通过对浆料固化性能的研究，得出了固化厚度随引发剂浓度，曝光能量，单体质量分数，单体和交联剂比例，单体溶液的折射率，粉末体积分数以及粉末粒径的变化关系，并得出相应的最佳值。

It is shown that the photosensitivity in chalcogenide fiber cladding leads to the shift of the dip wavelength in LPG, which should not be omitted.

提出一种新的实时监测光敏折射率变化的方法-线性调频外差干涉法，并用于分析和研究硫系光纤光敏性。

The structural features of borates were summrized and the correlations between the birefrigence and the crystal structure were investigated.

总结了含B－O基团化合物的成相规律，研究了双折射率与晶体结构之间的关联。

An inconvenience of prism couplers is that the prism material must have a high refractive index ??

棱镜耦合器的一个不方便的地方是棱镜材料必须有较高的折射率？

The dependences of third-order optical nonlinear on the molecular structures of polymethine cyanines were thoroughly analyzed by introducing the simplified free electron model and the time-dependent perturbation theory.

对咔唑羰基铬配合物还观察到了来自金属到配体的电荷转移特征吸收带；(3)采用皮秒前向简并四波混频技术测试了所有目标分子的三阶非线性极化率、二阶超极化率以及非线性折射率等非线性光学参数。

The recent developments of polymer fiber are described discribed, deuterated and perfl uorined polymer fiber for decreasing loss, and the graded index polymer fiber fo r increasing bandwidth are introduced.

本文综述国内外聚合物光纤的最新进展，介绍降低聚合物光纤损耗的氘化和氟化的方法，提出宽带的梯度折射率聚合物光纤。

This brought fixed cost, but it also is meant at the same time use a source to won't make you singlehanded assume a problem.

这带来了一定的成本，但它同时也意味着使用开源不会让你独力承担问题。

He gained a small fortune in real estate.

他在房地产上发了一笔小财。