用光导波测定吸收薄膜的吸收系数。
Determining the absorption coefficient of absorbing thin films with optical waveguides.
作者信息
Sasaki K, Takahashi H, Kudo Y, Suzuki N
出版信息
Appl Opt. 1980 Sep 1;19(17):3018-21. doi: 10.1364/AO.19.003018.
A new simple method of determining the absorption coefficient of absorbing thin films is proposed as an application of the complex propagation constant of a guided wave in a thin film optical waveguide. This method was applied to both cases as examples: low index (polyurethane film top layer containing rhodamine 6G dye) and high index (evaporated ZnSe film top layer) absorbing top layers on the main glass guide. The absorption coefficients so determined were compared with the values given by Lambert's method.
作为薄膜光波导中导波复传播常数的一种应用，提出了一种测定吸收薄膜吸收系数的新的简单方法。以主玻璃波导上低折射率（含若丹明6G染料的聚氨酯薄膜顶层）和高折射率（蒸发的ZnSe薄膜顶层）吸收顶层这两种情况为例应用了该方法。将如此测定的吸收系数与朗伯方法给出的值进行了比较。
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