The extinction coefficient of the thinner plct ( x ) films is relative big . on the other hand , the extinction coefficient of the thicker of plct ( x ) films is relative small 很薄的plct ）薄膜的消光系数较大，较厚的plct （ ）薄膜的消光系数较小。
The mold cavity number is used to group plastic cuvettes at production time ; this helps to ensure the lowest cuvette - to - cuvette variation in extinction coefficient 在生产过程中，通过铸模型腔的数量用来对塑料试管进行分类。这对于确定试管间的最低消光系数很有帮助。
The precision of the optical constants measured by transmission ttds is evaluated . the stimulation shows that the phase measurement dominates the anti - noise ability of ttds 具体估算出我们所用的透射型thz时域光谱系统的测量精度范围：折射率可以精确到1而消光系数可以精确到5 。
In the reflected wave , the reflectivity of forbidden band lowers quickly with the extinction coefficient increment , when the extinction coefficient increases to 0 . 05 , there is already no obvious photonic bandgap 得出：在反射波中，禁带的反射率随消光系数的增加而迅速降低，当消光系数增加到0 . 05时，已经不存在明显的能带。
In the transmitted wave , along with the extinction coefficient increment , the width of photonic bandgap is a gradual extension , the edge of photonic bandgap is a gradual faintness , when the extinction coefficient increases to 0 . 02 , there is already no obvious photonic bandgap 在透射波中，随着消光系数的增加，禁带宽度逐渐扩大，禁带边缘逐渐模糊，当消光系数增加到0 . 02时，已经不存在明显的能带。
The anti - l0 . 6 m laser performance of fog oil smoke - screen is tested and analysed on the outfield with a far infrared laser , the extinction coefficient , a key parameter to assess the obscuring performance of smoke - screen , has been caculated and the results also has been discussed 摘要利用远红外激光发射器对雾油烟幕的干扰激光性能进行了外场测试，分析了添加石墨及超细铜粉后对干扰效果的影响，计算得到了烟幕消光系数，并对结果进行了讨论。
In this paper , a model developed by t . d . dorney and d . duvillaret et al is used to discuss the principle and method for optical constants extracting . the real refractive index and extinction coefficient of materials and the extraction of other material parameters are also discussed Duvillaret等人提出的模型的基础上研究了从thz时间波形中提取材料的光学常数(实折射率和消光系数)的原理、方法，并对于如何得到材料的其他物理参数进行了探讨。
The infrared results showed that the ir characteristic value l080cm - lof cubic crystal sio , and the absorption peak 460cm - l of mgf , caused by the interaction between f - - mg ' + - p elastic vibration and photon radiation , appeared in the ir spectra . ellipsometric analysis showed that the typical absorption peaks 58lnm , 589nm and 606nm , resulting from the surface plasma resonance of cu panicles and reflecting the absorption on composite film system , appeared in the extinction coefficient k curves of cu ( voll5 % ) mgf , , cu ( vol20 % ) mgf , and cu ( vol30 % ) mgf , cermet films , respectively . with the component of cu increasing , the peak site presented red shift , which was in accordance to the results of ultraviolet - visible spectra 椭偏测试分析表明： cu ( vol15 ) mgf _ 2 、 cu ( vol20 ) mgf _ 2和cu ( vol30 ) mgf _ 2样品的消光系数k曲线中出现了反映复合金属陶瓷体系吸收的由cu金属颗粒表面等离子体共振引起的吸收峰，峰位分别为581nm 、 589nm和606nm ，呈现红移，这些与紫外-可见光谱测试结果相一致；此外， cu - mgf _ 2复合纳米金属陶瓷薄膜光学常数的实验值与考虑尺寸效应修正过的mg理论值总体上符合得很好。
Anti - infrared extinction coefficient is a key parameter to assess the obscuring performance of smoke - screen , a method to calculate the viriation of radiant energy and obtain the extinction coefficient based on the temperature tested by a thermal imager has been proved , the practical situation and notice in test also has been illustrated 摘要红外消光系数是衡量烟幕对红外遮蔽能力的关键参数，文中提出利用热像仪测得的温度数据，通过计算得到红外辐射能量变化及消光系数的方法，介绍应用情况及测试中应注意的问题。
Firstly , the characteristics of radiation propagation and attenuation in the atmosphere , and the power response of a contrast - limited optoelectic system are analyzed , the apparent contrast model of a target is developed , and the detection range equation dependent on the aerosol extinction coefficient and range parameter are derived 首先，分析了红外波段大气辐射传输与衰减、对比度限制光电成像系统功率响应特性，建立了目标表现观对比度模型，并推导出了由气溶胶消光系数和距离参量确定的探测距离方程。
