Hudelist Florian, Waddie Andrew J, Taghizadeh Mohammad R
Department of Physics, School of Engineering and Physical Sciences, Heriot-Watt University, Riccarton, Edinburgh EH14 4AS, Scotland.
Opt Lett. 2009 Jun 1;34(11):1681-3. doi: 10.1364/ol.34.001681.
We introduce a design method for diffractive cylindrical microlenses fabricated with a new technology similar to the fabrication of all-solid photonic crystal fibers. Unlike conventional microlenses that are fabricated with etching methods and thus have a step-index profile, the refractive index of each layer can be individually designed. We study the transmitted field of such nonperiodic lamellar phase grating. By using the field-stitching method we can suppress the effect of periodic boundary conditions of the Fourier modal method when calculating the transmitted field of nonperiodic lamellar phase elements. We suggest an algorithm to design multilayer phase elements, which act as cylindrical lenses. We show experimental and theoretical data for a diffraction-limited lens.
我们介绍了一种用于衍射圆柱微透镜的设计方法，该微透镜采用一种类似于全固态光子晶体光纤制造的新技术制造。与通过蚀刻方法制造因而具有阶跃折射率分布的传统微透镜不同，每层的折射率可以单独设计。我们研究了这种非周期性层状相位光栅的透射场。通过使用场拼接方法，在计算非周期性层状相位元件的透射场时，我们可以抑制傅里叶模态方法的周期性边界条件的影响。我们提出了一种设计多层相位元件的算法，这些元件可作为柱面透镜。我们展示了一个衍射极限透镜的实验和理论数据。
