论文标题
使用最大偏差角来确定复杂的折射率
Determination of Complex Refractive Index using Maximum Deviation Angle through Prism
论文作者
论文摘要
吸收材料被广泛使用，其光学特性是重要的因素。斯内尔的定律不包含部分吸收光的材料。因此，折射的光路是根据麦克斯韦定律计算的。当光穿过由光吸收材料制成的棱镜时，我们用它来获得偏差角。结果，偏差角具有局部最大点。局部最大值附近的偏差角对折射率的真实和虚构部分敏感。局部最大偏差角及其入射角用于确定折射的复杂指数。该测量与测量透明棱镜的最小偏差角具有相同的优势。也就是说，当光学板略微旋转并观察到测量光时，灯位的移动方向以极高的值逆转。检测很容易。然后，有必要从测得的局部最大偏差角及其入射角确定复杂的折射率。通过在固定的假想部分下改变折射率的实际部分，以参数绘制这两个角度。类似的曲线在固定的真实部位下绘制。每个曲线对于折射率的实际或虚部都有固定值。这些许多曲线的图纸是在测量之前制作的。然后，我们选择最接近局部最大偏差角及其入射角的四个曲线。四个曲线中的每一个附着的四个固定值决定了折射的复杂指数。可以将各种液体放入由平行板玻璃制成的棱柱容器中，并测量其局部最大偏差角。本文中的方法可以轻松确定复杂的折射率，可用于材料识别
Light-absorbing materials are widely used, and their optical properties are an important factor. Snell's law does not hold in materials that partially absorb light. Hence, the optical path in refraction is calculated from Maxwell's law. We used it to obtain the deviation angle when a light passes through a prism made of light absorbing material. As a result, the deviation angle has a local maximum point. The deviation angle near the local maximum is sensitive to the real and imaginary parts of the refractive index. The local maximum deviation angle and its incident angle are used to determine the complex index of refraction. This measurement has the same advantages as measuring the minimum deviation angle of a transparent prism. That is, when the optical bench is slightly rotated and the measurement light is observed, the moving direction of the light-spot is reversed at the extreme value. The detection is easy. Then, it is necessary to determine the complex refractive index from the measured local maximum deviation angle and its incident angle. These two angles are plotted parametrically by varying the real part of the refractive index under a fixed imaginary part. The similar curves are drawn under the fixed real parts. Each curve has a fixed value for the real or imaginary parts of the refractive index. Drawings of these many curves are made prior to measurement. Then we select the four curves that are closest to the local maximum deviation angle and its incident angle. Four fixed values attached to each of the four curves determine the complex index of refraction. Various liquids can be put in a prism container made of parallel plate glass and their local maximum deviation angles are measured. The method in this paper can easily determine the complex refractive index and can be used for material identification
