Durschlag M S, Detemple T A
Appl Opt. 1981 Apr 1;20(7):1245-53. doi: 10.1364/AO.20.001245.
The optical properties of freestanding and dielectrically backed inductive metal meshes are investigated in the far IR spectral regime. The most pronounced effect of the substrate is to cause a shift in the diffraction edge to longer wavelengths by a factor equal to the substrate index of refraction. Various theoretical models are reviewed and tested with the main result being that only the microwave based waveguide-array model successfully predicts the freestanding and dielectrically back optical features in and around the diffraction edge. A simplified version of this model is presented and shown to be adequate for describing the majority of the spectral features. The backed meshes are then characterized in terms of mirror quality for use in optically pumped far IR lasers.
在远红外光谱区域研究了独立式和电介质背衬感应金属网的光学特性。衬底最显著的影响是使衍射边缘向更长波长移动，移动因子等于衬底的折射率。回顾并测试了各种理论模型，主要结果是只有基于微波的波导阵列模型成功预测了衍射边缘及其周围的独立式和电介质背衬光学特性。提出了该模型的简化版本，并表明它足以描述大多数光谱特征。然后根据镜面质量对背衬金属网进行了表征，以用于光泵浦远红外激光器。
