De Sio Luciano, Roberts David E, Liao Zhi, Hwang Jeoungyeon, Tabiryan Nelson, Steeves Diane M, Kimball Brian R
Appl Opt. 2018 Jan 1;57(1):A118-A121. doi: 10.1364/AO.57.00A118.
We present and discuss opportunities opened up by a new generation of beam shaping optical elements that combine capabilities of digital spatial light polarization converters and diffractive properties of thin liquid crystalline films with patterned orientation of anisotropy axis (diffractive wave plates). Several functions of the new generation beam shapers are demonstrated, among them converting a laser beam of a Gaussian profile into a ring profile in the far field, a flattop profile, and into complex images. We also describe electrically controlled beam shaping optical elements which can be turned off and on within milliseconds by applying a low external voltage. Optical, morphological, and electro-optical properties of the components are characterized.
我们展示并讨论了新一代光束整形光学元件带来的机遇，这些元件结合了数字空间光偏振转换器的功能以及具有各向异性轴图案化取向的薄液晶膜（衍射波片）的衍射特性。展示了新一代光束整形器的几种功能，其中包括将高斯分布的激光束在远场转换为环形分布、平顶分布以及复杂图像。我们还描述了电控光束整形光学元件，通过施加低外部电压，它们可以在几毫秒内开启和关闭。对这些元件的光学、形态学和电光特性进行了表征。
