Huang Qian, Liu Wei, Yang Yongqiang, Xiao Long, Yang Zhengang, Liu Jinsong, Wang Kejia
Opt Express. 2021 Apr 12;29(8):12124-12130. doi: 10.1364/OE.421061.
Using 3D-printed n-faced pyramid lenses, we generate a series of structured diffraction free terahertz (THz) beams. Based on angular spectrum theory, analytical solutions of the output THz beams from these lenses can be obtained. Furthermore, we experimentally realize these non-diffraction THz beams, showing that the measured results are consistent with theory. It is believed that our structured non-diffraction THz beams can be used in THz imaging with large depth of focus.
使用3D打印的n面棱锥透镜，我们生成了一系列结构化的无衍射太赫兹（THz）光束。基于角谱理论，可以获得这些透镜输出太赫兹光束的解析解。此外，我们通过实验实现了这些无衍射太赫兹光束，结果表明测量结果与理论一致。我们相信，我们的结构化无衍射太赫兹光束可用于大焦深的太赫兹成像。
