Fernández R, Gallego S, Márquez A, Francés J, Marínez F J, Beléndez A
Appl Opt. 2015 Apr 10;54(11):3132-40. doi: 10.1364/AO.54.003132.
Photopolymers present appealing optical properties for holographic and diffractive applications. They enable modulation of the electrical permittivity and thickness and are self-processing, and layers with a wide range of thicknesses and properties can be fabricated on demand. In order to obtain a complete characterization of the material, low spatial frequency analysis has become a fundamental tool because the motion of the components inside of the material can be measured. We propose to use an index matching component to carry out a complete characterization and to differentiate the "apparent" and the real monomer diffusion. We also have quantified the minimum thickness to obtain the phase modulation of 2π required for the fabrication of many diffractive elements such as lenses, axicons, or blazed gratings. Finally, we have studied the influence of the thermal effects in the thickness variations.
光敏聚合物在全息和衍射应用中呈现出吸引人的光学特性。它们能够调节介电常数和厚度，并且具有自加工能力，可根据需求制造出具有广泛厚度和特性的层。为了全面表征该材料，低空间频率分析已成为一种基本工具，因为可以测量材料内部组分的运动。我们建议使用折射率匹配组件来进行全面表征，并区分“表观”和实际的单体扩散。我们还量化了获得许多衍射元件（如透镜、轴锥镜或闪耀光栅）制造所需的2π相位调制的最小厚度。最后，我们研究了热效应在厚度变化中的影响。
