Hendrix Karen D, Carniglia C K
JDSU, Santa Rosa, California 95407, USA.
Appl Opt. 2006 Apr 10;45(11):2410-21. doi: 10.1364/ao.45.002410.
A simple model for the path of a light beam through an optical coating is the path of a ray predicted by Snell's law. By determining the exit point of a beam for various types of coating, one finds that the simple model is a good approximation in the case of antireflection coatings, but not for coatings of other designs. An approximate method for determining the correct path of a beam through the coating is derived and the path is illustrated using a Gaussian incident beam and tracing the position of the peak field of the beam as it traverses the coating.
光束通过光学涂层的路径的一个简单模型是由斯涅尔定律预测的光线路径。通过确定光束在各种类型涂层中的出射点，人们发现，对于减反射涂层，该简单模型是一个很好的近似，但对于其他设计的涂层则不然。本文推导了一种确定光束通过涂层的正确路径的近似方法，并使用高斯入射光束进行说明，同时追踪光束在穿过涂层时其峰值场的位置。
