Avayu Ori, Eisenbach Omri, Ditcovski Ran, Ellenbogen Tal
Opt Lett. 2014 Jul 1;39(13):3892-5. doi: 10.1364/OL.39.003892.
We have developed multifunctional optical beam shapers based on plasmonic metasurfaces. The metasurfaces are composed of subwavelength-spaced polarization- and wavelength-selective optical nanoantennas that allow encoding several beam shapers on a single element. We demonstrate numerically and experimentally beam shapers that can be used to switch between arbitrary beam shapes. We specifically demonstrate switching between one-dimensional Airy and Gaussian beams, Hermite-Gaussian beams of different orders, and two-dimensional Airy and Bessel beams. These beam shapers can be used as integrated optical elements in applications that require more than one laser beam shape.
我们基于等离子体超表面开发了多功能光束整形器。这些超表面由亚波长间距的偏振和波长选择性光学纳米天线组成，能够在单个元件上编码多个光束整形器。我们通过数值模拟和实验证明了可用于在任意光束形状之间切换的光束整形器。我们特别展示了一维艾里光束和高斯光束、不同阶数的厄米-高斯光束以及二维艾里光束和贝塞尔光束之间的切换。这些光束整形器可作为集成光学元件用于需要多种激光束形状的应用中。
