宽带干涉涂层的散射损耗。

Scatter losses of broadband interference coatings.

作者信息

Ebert J, Pannhorst H, Küster H, Welling H

出版信息

Appl Opt. 1979 Mar 15;18(6):818-22. doi: 10.1364/AO.18.000818.

DOI:10.1364/AO.18.000818

PMID:20208828

Abstract

The scattering behavior of dielectric broadband coatings was measured in the 0.4-1.0-microm wavelength range. It is shown that the scattering properties are determined entirely by the surface roughness and the optical properties of the films. Scatter losses of ZnS, ThF(4), and MgF(2) monolayers are around 10(-2)%, but broadband mirrors may have losses of more than 10% due to resonant conditions within the multilayer structure. To calculate the scattering behavior of any multilayer system and to reduce the losses of broadband coatings, we developed a scattering model. The calculations are in good agreement with experimental results.

摘要

在0.4 - 1.0微米波长范围内测量了介质宽带涂层的散射行为。结果表明，散射特性完全由薄膜的表面粗糙度和光学性质决定。硫化锌、四氟化钍和氟化镁单层的散射损耗约为10⁻²%，但由于多层结构内的共振条件，宽带镜的损耗可能超过10%。为了计算任何多层系统的散射行为并降低宽带涂层的损耗，我们开发了一种散射模型。计算结果与实验结果吻合良好。