查询词典 refractive

The electrically controlled refractive index in a nematic liquid crystal cell for switchable π/2 phase shifting and quarter wave plate of terahertz wave was demonstrated. We used the nematic LC, E7, which exhibits a birefringence of ~0.17 (0.2~1.2THz), useable at the room temperature range because of the wide nematic range -10?

我们研制了在兆赫辐射(1012 赫兹)波段，以电压控制其双折射系数的向列型液晶盒所制作而成的可调式π/2相位调制器及四分之一波片，我们使用了E7这种向列型液晶，在0.2~1.2兆赫这个波段，E7的双折射系数约为0.17，此外其适用的温度范围很大(摄氏-10°~61°)，能够操作於室温。

Quarter-wave stack photonic crystal of 19 periods with three negative refractive index defects were taken as an example for numerical calculation.

以19个周期的1/4波堆存在3个负折射率缺陷的光子晶体为例进行了数值计算。

We using the Si substrate has 200μm thickness SiO because of its low absorbing and scattering, so it could be the anti-reflection layer;it also has well-variable refractive index、well-transmittal and well-heated stability of JSR THB-120N negative photoresist which we choice to be materials to develop the polymer waveguides.

选择具有成长200μm厚度的二氧化矽之矽晶片作为实验所需之基板，因为二氧化矽对光具有低本质吸收及低散射性等特质，故可作为所设计之抗反射层；所使用的光阻为JSR THB-120N来作为制作高分子波导的材料，它具有可调折射率、良好的导光性以及良好的热稳定性等。

Assuming that the actual refractive index, n, measured for the two-component mixture is linear

假设实际的折光率为n，所测得的两组份混合物中各组份的莫耳分数x，是线性的，那么可以写成

Through discussing further the reflective and refractive coefficients of line boundary, the features of line boundary are as follows: the attenuation of high frequency band (especially in band of line trap) of transient components generated by fault through line boundary is obvious, whereas the low frequency band (1~10kHz) components are hardly influenced. Moreover, the transient components below 100kHz should be adopted in purpose of outstanding the line boundary and weakening the transmission influence of transmission line.

通过对线路边界的透、反射系数的进一步分析发现：暂态信号的高频段穿越线路边界时将大为衰减，而低频段(1~10kHz)几乎不衰减；为弱化线路的传输影响而突出线路边界的作用，宜选用100kHz以下的信号分量。

Eigenvalue of "Baosheng Brand" special made tea seed oil (specific gravity, refractive index, iodine value and so on) is very similar to unsaturated fatty acid (oleic acid, linoleic acid and so on) easy to be absorbed by human body and abroad rare olive oil and quality index of tea seed oil is better olive oil (for concrete quality index, function and efficacy, please refer to table one and two).

&宝生牌&特制茶叶籽油的特征值和人体极易吸收的不饱和脂肪酸与国外名贵的橄榄油十分相似，而且质量指标好于橄榄油（具体质量指标、作用、功效见表一、表二）。

The dispersion properties of photonic crystal fiber was analyzed by an effective refractive model in detail, and the eigenvalue equation of the fundamental space-filling mode in infinite air silica micro-structure was presented.

采用有效折射率模型详细分析了光子晶体光纤的色散特性，并给出了无限大空气玻璃微结构中基模的本征方程。

Using this method, the effect of the PM-PCF structure on the optical characteristic parameters, including modal field diameters,effective refractive index of space-filling mode, normalized frequency, mode field and single-polarization single-mode region etc., are studied systemly.

在第三章，通过全矢量有限元分析方法详细地分析了保偏光子晶体光纤结构参数对光子晶体光纤的光学特性影响，包括对单偏振单模光子晶体光纤的模场直径、基空间填充模的有效折射率、归一化频率、模场分布、单偏振单模区域等一系列光学特性参数进行了分析。

Toluene was tested at three different laser wavelengths (532 nm, 610 nm, 800 nm) using shunt-wound double NIT-PO, in which the measured nonlinear refractive index at 532 nm was coincide with the value in nonlinear optics handbook, and exhibited the reliability of our experiment.

在本论文中，我们利用并联式系统对甲苯在三个不同的波段（532nm， 610nm， 800nm）进行了测量，其中532nm的测量结果与非线性光学手册的值相近，从而也验证了改进后的实验系统的可靠性。

The model of photon-induced refractive index change based on GaAs materials is presented briefly, then the model based on GaAs/AIGaAs quantum wells materials is deeply analyzed by treating the effects of photon-excited carriers self-consistently. Furthermore, the propagation characteristics of multi-quantum well waveguide is invested, and the low-loss multi-quantum well rib waveguide deeply etched is also designed by using the spectral index method.

在简要分析了基于GaAs材料的光致折射率模型的基础上，通过自洽的方法，重点研究了基于GaAs/AlGaAs多量子阱材料的光致折射率模型；其次分析了量子阱波导传输特性，利用谱折射率法设计低损耗的深刻蚀脊形量子阱波导。

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。