Hillenkamp F
Appl Opt. 1969 Feb 1;8(2):351-4. doi: 10.1364/AO.8.000351.
The coefficient of reflection of plane parallel plate beam splitters is very often taken as twice that of a single surface reflection. It is shown that this introduces appreciable errors in the majority of cases, because of the interference fringes of equal inclination. Formulas are derived for the angular dependence of the coefficient of reflection as well as for its average value. The angular distance between adjacent fringes has been evaluated and represented graphically. It is finally demonstrated that the influence of incomplete interference due to the lateral displacement of the reflected beam can be neglected if the beam splitter is followed by an integrating sphere or a similar element.
平面平行板分束器的反射系数常常被视为单个表面反射系数的两倍。结果表明，由于等倾干涉条纹的存在，在大多数情况下这会引入相当大的误差。推导了反射系数的角度依赖性及其平均值的公式。计算了相邻条纹之间的角距离并以图形表示。最后证明，如果分束器后面接有积分球或类似元件，则由于反射光束横向位移导致的不完全干涉的影响可以忽略不计。
