Liu J, Azzam R M
Appl Opt. 1996 Oct 1;35(28):5557-62. doi: 10.1364/AO.35.005557.
One- and two-dimensional high-spatial-frequency dielectric surface-relief gratings on a Au substrate are used to design a high-reflectance quarter-wave retarder at 70° angle of incidence and 10.6-μm light wavelength. The equivalent homogeneous anisotropic layer model is used. It is shown that equal and high reflectances (>98.5%) for the p and the spolarizations and quarter-wave retardation can be achieved with two-dimensional ZnS surface-relief gratings. Sensitivities to changes of incidence angle, light wavelength, grating filling factor, and grating layer thickness are considered.
在金衬底上的一维和二维高空间频率介质表面浮雕光栅被用于设计一个在70°入射角和10.6μm光波长下的高反射率四分之一波片。采用了等效均匀各向异性层模型。结果表明,二维硫化锌表面浮雕光栅能够实现p偏振和s偏振的等反射率且高反射率(>98.5%)以及四分之一波片延迟。考虑了对入射角、光波长、光栅填充因子和光栅层厚度变化的灵敏度。